Speed Limit for Triplet-Exciton Transfer in Solid-State PbS Nanocrystal-Sensitized Photon Upconversion

Nienhaus, Lea; Wu, Mengfei; Geva, Nadav; Shepherd, James J.; Wilson, Mark W.  B.; Bulović, Vladimir; Van Voorhis, Troy; Baldo, Marc A.; Bawendi, Moungi G.

doi:10.1021/acsnano.7b02024

Speed Limit for Triplet-Exciton Transfer in Solid-State PbS Nanocrystal-Sensitized Photon Upconversion

Journal Article · Wed Jul 26 00:00:00 EDT 2017 · ACS Nano

DOI:https://doi.org/10.1021/acsnano.7b02024· OSTI ID:1470429

^[1]; Wu, Mengfei ^[2]; Geva, Nadav ^[3]; Shepherd, James J. ^[1]; Wilson, Mark W. B. ^[1]; Bulović, Vladimir ^[4]; Van Voorhis, Troy ^[1]; Baldo, Marc A. ^[4]; ^[1]

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Chemistry
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Electrical Engineering and Computer Science
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Materials Science and Engineering
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Electrical Engineering and Computer Science

Hybrid interfaces combining inorganic and organic materials underpin the operation of many optoelectronic and photocatalytic systems and allow for innovative approaches to photon up- and down-conversion. However, the mechanism of exchange-mediated energy transfer of spin-triplet excitons across these interfaces remains obscure, particularly when both the macroscopic donor and acceptor are composed of many separately interacting nanoscopic moieties. Here, we study the transfer of excitons from colloidal lead sulfide (PbS) nanocrystals to the spin-triplet state of rubrene molecules. By reducing the length of the carboxylic acid ligands on the nanocrystal surface from 18 to 4 carbon atoms, thinning the effective ligand shell from 13 to 6 Å, we are able to increase the characteristic transfer rate by an order of magnitude. However, we observe that the energy transfer rate asymptotes for shorter separation distances (≤10 Å) which we attribute to the reduced Dexter coupling brought on by the increased effective dielectric constant of these solid-state devices when the aliphatic ligands are short. This implies that the shortest ligands, which hinder long-term colloidal stability, offer little advantage for energy transfer. Indeed, we find that hexanoic acid ligands are already sufficient for near-unity transfer efficiency. Using nanocrystals with these optimal-length ligands in an improved solid-state device structure, we obtain an upconversion efficiency of (7 ± 1)% with excitation at λ = 808 nm.

View Accepted Manuscript (DOE)

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Excitonics (CE)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0001088

OSTI ID:: 1470429

Journal Information:: ACS Nano, Journal Name: ACS Nano Journal Issue: 8 Vol. 11; ISSN 1936-0851

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

References (65)

Triplet Energy Transfer from PbS(Se) Nanocrystals to Rubrene: the Relationship between the Upconversion Quantum Yield and Size Mahboub, Melika; Maghsoudiganjeh, Hadi; Pham, Andrew Minh Advanced Functional Materials, Vol. 26, Issue 33 https://doi.org/10.1002/adfm.201505623	journal	June 2016
Colloidal PbS Nanocrystals with Size-Tunable Near-Infrared Emission: Observation of Post-Synthesis Self-Narrowing of the Particle Size Distribution Hines, M. A.; Scholes, G. D. Advanced Materials, Vol. 15, Issue 21, p. 1844-1849 https://doi.org/10.1002/adma.200305395	journal	November 2003
Theory and calculation for the electronic coupling in excitation energy transfer You, Zhi-Qiang; Hsu, Chao-Ping International Journal of Quantum Chemistry, Vol. 114, Issue 2 https://doi.org/10.1002/qua.24528	journal	August 2013
The triplet state energies of rubrene and diphenylisobenzofuran Herkstroeter, W. G.; Merkel, P. B. Journal of Photochemistry, Vol. 16, Issue 4 https://doi.org/10.1016/0047-2670(81)80055-X	journal	August 1981
VMD: Visual molecular dynamics Humphrey, William; Dalke, Andrew; Schulten, Klaus Journal of Molecular Graphics, Vol. 14, Issue 1 https://doi.org/10.1016/0263-7855(96)00018-5	journal	February 1996
Photon upconversion based on sensitized triplet–triplet annihilation Singh-Rachford, Tanya N.; Castellano, Felix N. Coordination Chemistry Reviews, Vol. 254, Issue 21-22 https://doi.org/10.1016/j.ccr.2010.01.003	journal	November 2010
Triplet states in organic semiconductors Köhler, A.; Bässler, H. Materials Science and Engineering: R: Reports, Vol. 66, Issue 4-6 https://doi.org/10.1016/j.mser.2009.09.001	journal	November 2009
Efficiency enhancement of solar cells by luminescent up-conversion of sunlight Trupke, T.; Shalav, A.; Richards, B. S. Solar Energy Materials and Solar Cells, Vol. 90, Issue 18-19 https://doi.org/10.1016/j.solmat.2005.09.021	journal	November 2006
Colloidal Quantum Dot Solar Cells Carey, Graham H.; Abdelhady, Ahmed L.; Ning, Zhijun Chemical Reviews, Vol. 115, Issue 23 https://doi.org/10.1021/acs.chemrev.5b00063	journal	June 2015
Electronic Processes within Quantum Dot-Molecule Complexes Harris, Rachel D.; Bettis Homan, Stephanie; Kodaimati, Mohamad Chemical Reviews, Vol. 116, Issue 21 https://doi.org/10.1021/acs.chemrev.6b00102	journal	August 2016
Surface State Mediated Electron Transfer Across the N-Type SiC/Electrolyte Interface Sachsenhauser, Matthias; Sharp, Ian D.; Stutzmann, Martin The Journal of Physical Chemistry C, Vol. 120, Issue 12 https://doi.org/10.1021/acs.jpcc.5b11569	journal	March 2016
Dynamics of Energy Transfer from CdSe Nanocrystals to Triplet States of Anthracene Ligand Molecules Piland, Geoffrey B.; Huang, Zhiyuan; Lee Tang, Ming The Journal of Physical Chemistry C, Vol. 120, Issue 11 https://doi.org/10.1021/acs.jpcc.5b12021	journal	March 2016
Distance-Dependent Triplet Energy Transfer between CdSe Nanocrystals and Surface Bound Anthracene Li, Xin; Huang, Zhiyuan; Zavala, Ramsha The Journal of Physical Chemistry Letters, Vol. 7, Issue 11 https://doi.org/10.1021/acs.jpclett.6b00761	journal	May 2016
Delayed Molecular Triplet Generation from Energized Lead Sulfide Quantum Dots Garakyaraghi, Sofia; Mongin, Cédric; Granger, Devin B. The Journal of Physical Chemistry Letters, Vol. 8, Issue 7 https://doi.org/10.1021/acs.jpclett.7b00546	journal	March 2017
Hybrid Molecule–Nanocrystal Photon Upconversion Across the Visible and Near-Infrared Huang, Zhiyuan; Li, Xin; Mahboub, Melika Nano Letters, Vol. 15, Issue 8 https://doi.org/10.1021/acs.nanolett.5b02130	journal	July 2015
Efficient Infrared-to-Visible Upconversion with Subsolar Irradiance Mahboub, Melika; Huang, Zhiyuan; Tang, Ming Lee Nano Letters, Vol. 16, Issue 11 https://doi.org/10.1021/acs.nanolett.6b03503	journal	October 2016
Exciton Fine Structure and Spin Relaxation in Semiconductor Colloidal Quantum Dots Kim, Jeongho; Wong, Cathy Y.; Scholes, Gregory D. Accounts of Chemical Research, Vol. 42, Issue 8 https://doi.org/10.1021/ar8002046	journal	August 2009
Interparticle Spacing and Structural Ordering in Superlattice PbS Nanocrystal Solids Undergoing Ligand Exchange Weidman, Mark C.; Yager, Kevin G.; Tisdale, William A. Chemistry of Materials, Vol. 27, Issue 2 https://doi.org/10.1021/cm503626s	journal	December 2014
Upconversion Luminescent Materials: Advances and Applications Zhou, Jing; Liu, Qian; Feng, Wei Chemical Reviews, Vol. 115, Issue 1 https://doi.org/10.1021/cr400478f	journal	November 2014
The OPLS [optimized potentials for liquid simulations] potential functions for proteins, energy minimizations for crystals of cyclic peptides and crambin Jorgensen, William L.; Tirado-Rives, Julian Journal of the American Chemical Society, Vol. 110, Issue 6 https://doi.org/10.1021/ja00214a001	journal	March 1988
Dibenzotetraphenylperiflanthene: Synthesis, Photophysical Properties, and Electrogenerated Chemiluminescence Debad, Jeff D.; Morris, Jonathan C.; Lynch, Vince Journal of the American Chemical Society, Vol. 118, Issue 10 https://doi.org/10.1021/ja9537888	journal	January 1996
Sub-Nanosecond Resonance Energy Transfer in the Near-Infrared within Self-Assembled Conjugates of PbS Quantum Dots and Cyanine Dye J-Aggregates Wang, Chen; Weiss, Emily A. Journal of the American Chemical Society, Vol. 138, Issue 30 https://doi.org/10.1021/jacs.6b04087	journal	July 2016
Near-Infrared-to-Visible Photon Upconversion Sensitized by a Metal Complex with Spin-Forbidden yet Strong S ₀ –T ₁ Absorption Amemori, Shogo; Sasaki, Yoichi; Yanai, Nobuhiro Journal of the American Chemical Society, Vol. 138, Issue 28 https://doi.org/10.1021/jacs.6b04692	journal	July 2016
Resonant Energy Transfer in PbS Quantum Dots Clark, Stephen W.; Harbold, Jeffrey M.; Wise, Frank W. The Journal of Physical Chemistry C, Vol. 111, Issue 20 https://doi.org/10.1021/jp0713561	journal	May 2007
Defect-Mediated Energy Transfer between ZnO Nanocrystals and a Conjugated Dye Beane, Gary A.; Morfa, Anthony J.; Funston, Alison M. The Journal of Physical Chemistry C, Vol. 116, Issue 5 https://doi.org/10.1021/jp209638g	journal	January 2012
Triplet vs Singlet Energy Transfer in Organic Semiconductors: The Tortoise and the Hare Yost, Shane R.; Hontz, Eric; Yeganeh, Sina The Journal of Physical Chemistry C, Vol. 116, Issue 33 https://doi.org/10.1021/jp304433t	journal	August 2012
Magnetic Field Effects on Singlet Fission and Fluorescence Decay Dynamics in Amorphous Rubrene Piland, Geoffrey B.; Burdett, Jonathan J.; Kurunthu, Dharmalingam The Journal of Physical Chemistry C, Vol. 117, Issue 3 https://doi.org/10.1021/jp309286v	journal	January 2013
Electron Transfer as a Probe of the Permeability of Organic Monolayers on the Surfaces of Colloidal PbS Quantum Dots Knowles, Kathryn E.; Tagliazucchi, Mario; Malicki, Michał The Journal of Physical Chemistry C, Vol. 117, Issue 30 https://doi.org/10.1021/jp406485y	journal	July 2013
Blinking Statistics of Small Clusters of Semiconductor Nanocrystals Whitcomb, Kevin J.; Ryan, Duncan P.; Gelfand, Martin P. The Journal of Physical Chemistry C, Vol. 117, Issue 48 https://doi.org/10.1021/jp407659y	journal	November 2013
Multicomponent Polymeric Film for Red to Green Low Power Sensitized Up-Conversion Monguzzi, Angelo; Tubino, Riccardo; Meinardi, Francesco The Journal of Physical Chemistry A, Vol. 113, Issue 7 https://doi.org/10.1021/jp809971u	journal	February 2009
Adsorption and Binding of Ligands to CdSe Nanocrystals Schapotschnikow, Philipp; Hommersom, Bob; Vlugt, Thijs J. H. The Journal of Physical Chemistry C, Vol. 113, Issue 29 https://doi.org/10.1021/jp903291d	journal	June 2009
Anomalously Large Polarization Effect Responsible for Excitonic Red Shifts in PbSe Quantum Dot Solids Wolcott, Abraham; Doyeux, Vincent; Nelson, Cory A. The Journal of Physical Chemistry Letters, Vol. 2, Issue 7 https://doi.org/10.1021/jz200080d	journal	March 2011
Photochemical Upconversion: The Primacy of Kinetics Schmidt, Timothy W.; Castellano, Felix N. The Journal of Physical Chemistry Letters, Vol. 5, Issue 22 https://doi.org/10.1021/jz501799m	journal	November 2014
The Dominant Role of Exciton Quenching in PbS Quantum-Dot-Based Photovoltaic Devices Wanger, Darcy D.; Correa, Raoul E.; Dauler, Eric A. Nano Letters, Vol. 13, Issue 12, p. 5907-5912 https://doi.org/10.1021/nl402886j	journal	November 2013
Broadband Up-Conversion at Subsolar Irradiance: Triplet–Triplet Annihilation Boosted by Fluorescent Semiconductor Nanocrystals Monguzzi, A.; Braga, D.; Gandini, M. Nano Letters, Vol. 14, Issue 11 https://doi.org/10.1021/nl503322a	journal	October 2014
Predicting Nanocrystal Shape through Consideration of Surface-Ligand Interactions Bealing, Clive R.; Baumgardner, William J.; Choi, Joshua J. ACS Nano, Vol. 6, Issue 3 https://doi.org/10.1021/nn3000466	journal	February 2012
Solution-processed semiconductors for next-generation photodetectors García de Arquer, F. Pelayo; Armin, Ardalan; Meredith, Paul Nature Reviews Materials, Vol. 2, Issue 3 https://doi.org/10.1038/natrevmats.2016.100	journal	January 2017
A transferable model for singlet-fission kinetics Yost, Shane R.; Lee, Jiye; Wilson, Mark W. B. Nature Chemistry, Vol. 6, Issue 6 https://doi.org/10.1038/nchem.1945	journal	May 2014
Role of mid-gap states in charge transport and photoconductivity in semiconductor nanocrystal films Nagpal, Prashant; Klimov, Victor I. Nature Communications, Vol. 2, Issue 1 https://doi.org/10.1038/ncomms1492	journal	September 2011
Excitons in nanoscale systems Scholes, Gregory D.; Rumbles, Garry Nature Materials, Vol. 5, Issue 9 https://doi.org/10.1038/nmat1710	journal	September 2006
Resonant energy transfer of triplet excitons from pentacene to PbSe nanocrystals Tabachnyk, Maxim; Ehrler, Bruno; Gélinas, Simon Nature Materials, Vol. 13, Issue 11 https://doi.org/10.1038/nmat4093	journal	October 2014
Energy harvesting of non-emissive triplet excitons in tetracene by emissive PbS nanocrystals Thompson, Nicholas J.; Wilson, Mark W. B.; Congreve, Daniel N. Nature Materials, Vol. 13, Issue 11 https://doi.org/10.1038/nmat4097	journal	October 2014
Solid-state infrared-to-visible upconversion sensitized by colloidal nanocrystals Wu, Mengfei; Congreve, Daniel N.; Wilson, Mark W. B. Nature Photonics, Vol. 10, Issue 1 https://doi.org/10.1038/nphoton.2015.226	journal	November 2015
Deconstructing the photon stream from single nanocrystals: from binning to correlation Cui, Jian; Beyler, Andrew P.; Bischof, Thomas S. Chem. Soc. Rev., Vol. 43, Issue 4 https://doi.org/10.1039/C3CS60330J	journal	January 2014
Photochemical upconversion: present status and prospects for its application to solar energy conversion Schulze, Tim F.; Schmidt, Timothy W. Energy & Environmental Science, Vol. 8, Issue 1 https://doi.org/10.1039/C4EE02481H	journal	January 2015
Improving solar cell efficiencies by up-conversion of sub-band-gap light Trupke, T.; Green, M. A.; Würfel, P. Journal of Applied Physics, Vol. 92, Issue 7 https://doi.org/10.1063/1.1505677	journal	October 2002
A Theory of Sensitized Luminescence in Solids Dexter, D. L. The Journal of Chemical Physics, Vol. 21, Issue 5, p. 836-850 https://doi.org/10.1063/1.1699044	journal	May 1953
Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells Shockley, William; Queisser, Hans J. Journal of Applied Physics, Vol. 32, Issue 3, p. 510-519 https://doi.org/10.1063/1.1736034	journal	March 1961
On the Theory of Oxidation‐Reduction Reactions Involving Electron Transfer. I Marcus, R. A. The Journal of Chemical Physics, Vol. 24, Issue 5 https://doi.org/10.1063/1.1742723	journal	May 1956
[Pb(H2O)]2+ and [Pb(OH)]+: Four-component density functional theory calculations, correlated scalar relativistic constrained-space orbital variation energy decompositions, and topological analysis Gourlaouen, Christophe; Piquemal, Jean-Philip; Parisel, Olivier The Journal of Chemical Physics, Vol. 124, Issue 17 https://doi.org/10.1063/1.2186994	journal	May 2006
Configuration interaction based on constrained density functional theory: A multireference method Wu, Qin; Cheng, Chiao-Lun; Van Voorhis, Troy The Journal of Chemical Physics, Vol. 127, Issue 16 https://doi.org/10.1063/1.2800022	journal	October 2007
Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes Kondakov, D. Y.; Pawlik, T. D.; Hatwar, T. K. Journal of Applied Physics, Vol. 106, Issue 12 https://doi.org/10.1063/1.3273407	journal	December 2009
Effective medium at finite frequency: Theory and experiment Rousselle, D.; Berthault, A.; Acher, O. Journal of Applied Physics, Vol. 74, Issue 1 https://doi.org/10.1063/1.355256	journal	July 1993
Reducing recombination losses in planar organic photovoltaic cells using multiple step charge separation Heidel, T. D.; Hochbaum, D.; Sussman, J. M. Journal of Applied Physics, Vol. 109, Issue 10 https://doi.org/10.1063/1.3585863	journal	May 2011
Enhanced external quantum efficiency in an organic photovoltaic cell via singlet fission exciton sensitizer Reusswig, P. D.; Congreve, D. N.; Thompson, N. J. Applied Physics Letters, Vol. 101, Issue 11 https://doi.org/10.1063/1.4752445	journal	September 2012
Interference-enhanced infrared-to-visible upconversion in solid-state thin films sensitized by colloidal nanocrystals Wu, Mengfei; Jean, Joel; Bulović, Vladimir Applied Physics Letters, Vol. 110, Issue 21 https://doi.org/10.1063/1.4984136	journal	May 2017
Time-resolved photoluminescence spectroscopy of ligand-capped PbS nanocrystals Warner, Jamie H.; Thomsen, Elizabeth; Watt, Andrew R. Nanotechnology, Vol. 16, Issue 2 https://doi.org/10.1088/0957-4484/16/2/001	journal	December 2004
Observation of solvatochromism in CdSe colloidal quantum dots Leatherdale, C. A.; Bawendi, M. G. Physical Review B, Vol. 63, Issue 16 https://doi.org/10.1103/PhysRevB.63.165315	journal	April 2001
Fluorescence from rubrene single crystals: Interplay of singlet fission and energy trapping Ma, Lin; Zhang, Keke; Kloc, Christian Physical Review B, Vol. 87, Issue 20 https://doi.org/10.1103/PhysRevB.87.201203	journal	May 2013
Electron transfer reactions in chemistry. Theory and experiment Marcus, Rudolph A. Reviews of Modern Physics, Vol. 65, Issue 3, p. 599-610 https://doi.org/10.1103/RevModPhys.65.599	journal	July 1993
PbSe Nanocrystal Solids for n- and p-Channel Thin Film Field-Effect Transistors Talapin, D. V. Science, Vol. 310, Issue 5745, p. 86-89 https://doi.org/10.1126/science.1116703	journal	October 2005
A tunable library of substituted thiourea precursors to metal sulfide nanocrystals Hendricks, M. P.; Campos, M. P.; Cleveland, G. T. Science, Vol. 348, Issue 6240 https://doi.org/10.1126/science.aaa2951	journal	June 2015
Direct observation of triplet energy transfer from semiconductor nanocrystals Mongin, C.; Garakyaraghi, S.; Razgoniaeva, N. Science, Vol. 351, Issue 6271 https://doi.org/10.1126/science.aad6378	journal	January 2016
L ONG -R ANGE R ESONANCE E NERGY T RANSFER IN M OLECULAR S YSTEMS Scholes, Gregory D. Annual Review of Physical Chemistry, Vol. 54, Issue 1 https://doi.org/10.1146/annurev.physchem.54.011002.103746	journal	October 2003
Impact of Different Surface Ligands on the Optical Properties of PbS Quantum Dot Solids Xu, Fan; Gerlein, Luis; Ma, Xin Materials, Vol. 8, Issue 4 https://doi.org/10.3390/ma8041858	journal	April 2015

Cited By (12)

Photochemical Upconversion Theory: Importance of Triplet Energy Levels and Triplet Quenching Jefferies, David; Schmidt, Timothy W.; Frazer, Laszlo Physical Review Applied, Vol. 12, Issue 2 https://doi.org/10.1103/physrevapplied.12.024023	journal	August 2019
Ultrafast Charge Transfer and Upconversion in Zinc β-Tetraaminophthalocyanine-Functionalized PbS Nanostructures Probed by Transient Absorption Spectroscopy Lauth, Jannika; Grimaldi, Gianluca; Kinge, Sachin Angewandte Chemie, Vol. 129, Issue 45 https://doi.org/10.1002/ange.201707443	journal	October 2017
Ultrafast Charge Transfer and Upconversion in Zinc β-Tetraaminophthalocyanine-Functionalized PbS Nanostructures Probed by Transient Absorption Spectroscopy Lauth, Jannika; Grimaldi, Gianluca; Kinge, Sachin Angewandte Chemie International Edition, Vol. 56, Issue 45 https://doi.org/10.1002/anie.201707443	journal	October 2017
Future and challenges for hybrid upconversion nanosystems Wen, Shihui; Zhou, Jiajia; Schuck, P. James Nature Photonics, Vol. 13, Issue 12 https://doi.org/10.1038/s41566-019-0528-x	journal	October 2019
Using lead chalcogenide nanocrystals as spin mixers: a perspective on near-infrared-to-visible upconversion Nienhaus, Lea; Wu, Mengfei; Bulović, Vladimir Dalton Transactions, Vol. 47, Issue 26 https://doi.org/10.1039/c8dt00419f	journal	January 2018
Crystalline silicon solar cells with tetracene interlayers: the path to silicon-singlet fission heterojunction devices MacQueen, Rowan W.; Liebhaber, Martin; Niederhausen, Jens Materials Horizons, Vol. 5, Issue 6 https://doi.org/10.1039/c8mh00853a	journal	January 2018
Colloidal semiconductor nanocrystals in energy transfer reactions Moroz, Pavel; Royo Romero, Luis; Zamkov, Mikhail Chemical Communications, Vol. 55, Issue 21 https://doi.org/10.1039/c9cc00162j	journal	January 2019
Photon upconversion utilizing energy beyond the band gap of crystalline silicon with a hybrid TES-ADT/PbS quantum dots system Nishimura, Naoyuki; Allardice, Jesse R.; Xiao, James Chemical Science, Vol. 10, Issue 18 https://doi.org/10.1039/c9sc00821g	journal	January 2019
Optical features of hybrid molecular/biological-quantum dot systems governed by energy transfer processes Wax, Terianna J.; Zhao, Jing Journal of Materials Chemistry C, Vol. 7, Issue 22 https://doi.org/10.1039/c9tc00232d	journal	January 2019
Primary amines enhance triplet energy transfer from both the band edge and trap state from CdSe nanocrystals Rigsby, Emily M.; Lee, Kevin; Sun, Jefferson The Journal of Chemical Physics, Vol. 151, Issue 17 https://doi.org/10.1063/1.5125021	journal	November 2019
A perspective on triplet fusion upconversion: triplet sensitizers beyond quantum dots VanOrman, Zachary A.; Bieber, Alexander S.; Wieghold, Sarah MRS Communications, Vol. 9, Issue 3 https://doi.org/10.1557/mrc.2019.115	journal	September 2019
Photochemical Upconversion Theory: Importance of Triplet Energy Levels and Triplet Quenching Jefferies, David; Schmidt, Timothy W.; Frazer, Laszlo arXiv https://doi.org/10.48550/arxiv.1908.04927	text	January 2019

Similar Records

Solid-state infrared-to-visible upconversion sensitized by colloidal nanocrystals

Journal Article · Sun Nov 22 23:00:00 EST 2015 · Nature Photonics · OSTI ID:1387500

Interference-enhanced infrared-to-visible upconversion in solid-state thin films sensitized by colloidal nanocrystals

Journal Article · Sun May 21 20:00:00 EDT 2017 · Applied Physics Letters · OSTI ID:1466223

Achieving spin-triplet exciton transfer between silicon and molecular acceptors for photon upconversion

Journal Article · Sun Dec 01 19:00:00 EST 2019 · Nature Chemistry · OSTI ID:1773889

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
charge transport
optics
photosynthesis (natural and artificial)
solar (photovoltaic)
solid state lighting
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)

Speed Limit for Triplet-Exciton Transfer in Solid-State PbS Nanocrystal-Sensitized Photon Upconversion

Citation Formats

References (65)

Cited By (12)

Similar Records

Related Subjects