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Title: “Self-trapping” in solar cell hybrid inorganic-organic perovskite absorbers

Journal Article · · Applied Materials Today
 [1];  [2];  [3];  [4];  [5]
  1. Institute of Solid State Chemistry and Mechanochemistry, Novosibirsk (Russian Federation); Skolkovo Institute of Science and Technology, Moscow (Russian Federation)
  2. Fritz Haber Institute of the Max Planck Society, Berlin (Germany)
  3. Skolkovo Institute of Science and Technology, Moscow (Russian Federation); Universite Catholique de Louvain, Louvain-la-Neuve (Belgium)
  4. Skolkovo Institute of Science and Technology, Moscow (Russian Federation)
  5. Univ. of Pittsburgh, PA (United States)

In the simplest picture, a “self-trapped” polaron forms when an excess electron or hole deforms a crystal lattice, creating a potential well with bound states. Properties of self-trapped polarons in methylammonium lead iodide perovskite (MAPbI3 ), which is widely used as solar cell absorber, are of great interest, and are a subject of ongoing investigations and debates concerning the existence of large polarons with the co-presence of metastable self-trapping. Herein, we employ a self-interaction-free density functional theory method to investigate the stability of small polarons in tetragonal MAPbI3 phase. The electron small polaron is found to be unstable, while the hole small polaron is found to be metastable at realistic operation temperatures of solar cells. Further, the hole polaron is found to have a hole band close to the conduction band, which in conjunction with its metastability suggests that small polarons will have an appreciable effect on charge-carrier recombinations in MAPbI3. Further, in this study, we posit that the existence of the metastable polarons in addition to the large polarons may explain the experimentally observed non-monotonic temperature dependence of bimolecular charge-carrier recombination rate in tetragonal MAPbI3 phase.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF)
Sponsoring Organization:
USDOE; National Science Foundation (NSF); RSCF-INSF; FRS-FNRS Belgium
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1981541
Journal Information:
Applied Materials Today, Journal Name: Applied Materials Today Journal Issue: C Vol. 26; ISSN 2352-9407
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (94)

Temperature-Dependent Charge-Carrier Dynamics in CH 3 NH 3 PbI 3 Perovskite Thin Films journal September 2015
Charge-Carrier Dynamics and Mobilities in Formamidinium Lead Mixed-Halide Perovskites journal September 2015
Polarons and Charge Localization in Metal‐Halide Semiconductors for Photovoltaic and Light‐Emitting Devices journal May 2021
Bromine Doping of MAPbI 3 Films Deposited via Chemical Vapor Deposition Enables Efficient and Photo‐Stable Self‐Powered Photodetectors journal July 2020
Electrostatic interactions between charged defects in supercells journal December 2010
Perovskite Solar Cells: From Materials to Devices journal October 2014
Studies of polaron motion journal November 1959
The 1: 2: 3: 4 theorem and the ground state of free polarons journal May 1973
Hybrid Perovskites for Photovoltaics: Charge-Carrier Recombination, Diffusion, and Radiative Efficiencies journal December 2015
Anharmonicity and Octahedral Tilting in Hybrid Vacancy-Ordered Double Perovskites journal December 2017
Intriguing Optoelectronic Properties of Metal Halide Perovskites journal June 2016
Large-Scale Benchmark of Exchange–Correlation Functionals for the Determination of Electronic Band Gaps of Solids journal July 2019
Assessing Temperature Dependence of Drift Mobility in Methylammonium Lead Iodide Perovskite Single Crystals journal February 2018
Polarons in Halide Perovskites: A Perspective journal March 2020
Photoinduced Reversible Structural Transformations in Free-Standing CH 3 NH 3 PbI 3 Perovskite Films journal June 2015
Understanding the Implication of Carrier Diffusion Length in Photovoltaic Cells journal September 2015
Are Mobilities in Hybrid Organic–Inorganic Halide Perovskites Actually “High”? journal November 2015
Phonon–Electron Scattering Limits Free Charge Mobility in Methylammonium Lead Iodide Perovskites journal December 2015
Rashba Effect and Carrier Mobility in Hybrid Organic–Inorganic Perovskites journal July 2016
Predicting Band Gaps with Hybrid Density Functionals journal October 2016
Segregation of Native Defects to the Grain Boundaries in Methylammonium Lead Iodide Perovskite journal November 2017
How Lattice Dynamics Moderate the Electronic Properties of Metal-Halide Perovskites journal November 2018
Effects of Electron–Phonon Coupling on Electronic Properties of Methylammonium Lead Iodide Perovskites journal December 2018
Polaron Stabilization by Cooperative Lattice Distortion and Cation Rotations in Hybrid Perovskite Materials journal May 2016
Charge-Carrier Mobilities in Metal Halide Perovskites: Fundamental Mechanisms and Limits journal June 2017
Origin of Low Carrier Mobilities in Halide Perovskites journal January 2019
Perovskites for Solar Thermoelectric Applications: A First Principle Study of CH 3 NH 3 AI 3 (A = Pb and Sn) journal August 2014
Improved Understanding of the Electronic and Energetic Landscapes of Perovskite Solar Cells: High Local Charge Carrier Mobility, Reduced Recombination, and Extremely Shallow Traps journal September 2014
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells journal May 2009
Accurate Band Gaps for Semiconductors from Density Functional Theory journal January 2011
Perovskites: The Emergence of a New Era for Low-Cost, High-Efficiency Solar Cells journal October 2013
Homogeneous Emission Line Broadening in the Organo Lead Halide Perovskite CH 3 NH 3 PbI 3– x Cl x journal March 2014
Crystal Structures, Optical Properties, and Effective Mass Tensors of CH 3 NH 3 PbX 3 (X = I and Br) Phases Predicted from HSE06 journal March 2014
Thermally Activated Exciton Dissociation and Recombination Control the Carrier Dynamics in Organometal Halide Perovskite journal June 2014
Role of Dispersive Interactions in Determining Structural Properties of Organic–Inorganic Halide Perovskites: Insights from First-Principles Calculations journal July 2014
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX 3 , X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut journal February 2015
Hybrid organic—inorganic perovskites: low-cost semiconductors with intriguing charge-transport properties journal January 2016
Light-activated photocurrent degradation and self-healing in perovskite solar cells journal May 2016
Electron–phonon coupling in hybrid lead halide perovskites journal May 2016
Enhancing photoluminescence yields in lead halide perovskites by photon recycling and light out-coupling journal December 2016
The emergence of perovskite solar cells journal July 2014
Bimolecular recombination in methylammonium lead triiodide perovskite is an inverse absorption process journal January 2018
Probing femtosecond lattice displacement upon photo-carrier generation in lead halide perovskite journal May 2018
Dynamic emission Stokes shift and liquid-like dielectric solvation of band edge carriers in lead-halide perovskites journal March 2019
Dynamic shortening of disorder potentials in anharmonic halide perovskites journal July 2019
Thermochemical electronegativities of the elements journal April 2021
Coherent vibrational dynamics reveals lattice anharmonicity in organic–inorganic halide perovskite nanocrystals journal May 2021
Exchange-correlation functionals for band gaps of solids: benchmark, reparametrization and machine learning journal July 2020
Predominance of non-adiabatic effects in zero-point renormalization of the electronic band gap journal November 2020
Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9% journal August 2012
Bulk crystal growth of hybrid perovskite material CH 3 NH 3 PbI 3 journal January 2015
The nature of excess electrons in anatase and rutile from hybrid DFT and RPA journal January 2014
Organohalide lead perovskites for photovoltaic applications journal January 2014
Perovskite photovoltaics: a high-efficiency newcomer to the solar cell family journal January 2014
High intrinsic carrier mobility and photon absorption in the perovskite CH 3 NH 3 PbI 3 journal January 2015
Optical phonons in methylammonium lead halide perovskites and implications for charge transport journal January 2016
Searching for promising new perovskite-based photovoltaic absorbers: the importance of electronic dimensionality journal January 2017
Crystal structure resolution of an insulator due to the cooperative Jahn–Teller effect through Bader's theory: the challenging case of cobaltite oxide Y114 journal January 2018
Revealing the nature of photoluminescence emission in the metal-halide double perovskite Cs 2 AgBiBr 6 journal January 2019
Ion migration in Br-doped MAPbI3 and its inhibition mechanisms investigated via quantum dynamics simulations journal January 2020
Efficient hybrid density functional calculations in solids: Assessment of the Heyd–Scuseria–Ernzerhof screened Coulomb hybrid functional journal July 2004
Unusual defect physics in CH 3 NH 3 PbI 3 perovskite solar cell absorber journal February 2014
Molecular ferroelectric contributions to anomalous hysteresis in hybrid perovskite solar cells journal August 2014
Nature of the cubic to tetragonal phase transition in methylammonium lead iodide perovskite journal October 2016
Low-frequency optical phonon modes and carrier mobility in the halide perovskite CH 3 NH 3 PbBr 3 using terahertz time-domain spectroscopy journal November 2017
Understanding band gaps of solids in generalized Kohn–Sham theory journal March 2017
The lifetime of electrons, holes and excitons before self-trapping journal September 1977
Auger recombination in direct-gap semiconductors: band-structure effects journal July 1983
First-principles supercell calculations of small polarons with proper account for long-range polarization effects journal March 2018
Proof that ∂ E ∂ n i = ε in density-functional theory journal December 1978
Electron localization with and without barrier formation journal March 1993
Periodic boundary conditions in ab initio calculations journal February 1995
Intrinsic defects in ZnO calculated by screened exchange and hybrid density functionals journal March 2010
Variational polaron self-interaction-corrected total-energy functional for charge excitations in insulators journal August 2015
Erratum: Variational polaron self-interaction-corrected total-energy functional for charge excitations in insulators [Phys. Rev. B92, 075202 (2015)] journal November 2015
DFT+ U study of self-trapping, trapping, and mobility of oxygen-type hole polarons in barium stannate journal October 2017
Calculating polaron mobility in halide perovskites journal November 2017
Ab initio theory of polarons: Formalism and applications journal June 2019
Accurate Molecular Van Der Waals Interactions from Ground-State Electron Density and Free-Atom Reference Data journal February 2009
First-Principles Calculations of the Urbach Tail in the Optical Absorption Spectra of Silica Glass journal January 2011
Carrier Lifetimes and Polaronic Mass Enhancement in the Hybrid Halide Perovskite CH 3 NH 3 PbI 3 from Multiphonon Fröhlich Coupling journal August 2018
Quasiparticle energies in semiconductors: Self-energy correction to the local-density approximation journal May 1989
Generalized Gradient Approximation Made Simple journal October 1996
Femtosecond Dynamics of the Exciton Self-Trapping Process in a Quasi-One-Dimensional Halogen-Bridged Platinum Complex journal July 1998
One-hundred-three compound band-structure benchmark of post-self-consistent spin-orbit coupling treatments in density functional theory journal August 2017
Exciton-polaron spectral structures in two-dimensional hybrid lead-halide perovskites journal June 2018
Electron-phonon interactions from first principles journal February 2017
Ultrafast correlated charge and lattice motion in a hybrid metal halide perovskite journal May 2019
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites journal October 2012
A Proposed Model of Excitonic Mechanism for Defect Formation in Alkali Halides journal February 1978
Dynamical Aspects of Self-Trapping of 1 s Excitons in RbI and KI journal December 1983
Self-Trapping of an Electron by the Acoustical Mode of Lattice Vibration. I journal July 1961
Charge-Carrier Dynamics in Organic-Inorganic Metal Halide Perovskites journal May 2016
The expanding world of hybrid perovskites: materials properties and emerging applications journal March 2015