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Title: Photophysical properties of wavelength-tunable methylammonium lead halide perovskite nanocrystals

Abstract

Here we present the time-correlated luminescence of isolated nanocrystals of five methylammonium lead mixed-halide perovskite compositions (CH3NH3PbBr3$$-$$xIx) that were synthesized with varying iodide and bromide anion loading. All analyzed nanocrystals had a spherical morphology with diameters in the range of 2 to 32 nm. The luminescence maxima of CH3NH3PbBr3$$-$$xIx nanocrystals were tuned to wavelengths ranging between 498 and 740 nm by varying the halide loading. Both CH3NH3PbI3 and CH3NH3PbBr3 nanocrystals exhibited no luminescence intermittency for more than 90% of the 250 s analysis time, as defined by a luminescence intensity three standard deviations above the background. The mixed halide CH3NH3PbBr0.75I0.25, CH3NH3PbBr0.50I0.50, and CH3NH3PbBr0.25I0.75 nanocrystals exhibited luminescence intermittency in 18%, 4% and 26% of the nanocrystals, respectively. Irrespective of luminescence intermittency, luminescence intensities were classified for each nanocrystal as: (a) constant, (b) multimodal, (c) photobrightening, and (d) photobleaching. Finally, based on their photophysics, the CH3NH3PbBr3$$-$$xIx nanocrystals can be expected to be useful in a wide-range of applications where low and non-intermittent luminescence is desirable, for example as imaging probes and in films for energy conversion devices.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1342920
Report Number(s):
IS-J-9149
Journal ID: ISSN 2050-7526; JMCCCX
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry C
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2050-7526
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION

Citation Formats

Freppon, Daniel J., Men, Long, Burkhow, Sadie J., Petrich, Jacob W., Vela, Javier, and Smith, Emily A.. Photophysical properties of wavelength-tunable methylammonium lead halide perovskite nanocrystals. United States: N. p., 2016. Web. doi:10.1039/C6TC03886G.
Freppon, Daniel J., Men, Long, Burkhow, Sadie J., Petrich, Jacob W., Vela, Javier, & Smith, Emily A.. Photophysical properties of wavelength-tunable methylammonium lead halide perovskite nanocrystals. United States. https://doi.org/10.1039/C6TC03886G
Freppon, Daniel J., Men, Long, Burkhow, Sadie J., Petrich, Jacob W., Vela, Javier, and Smith, Emily A.. 2016. "Photophysical properties of wavelength-tunable methylammonium lead halide perovskite nanocrystals". United States. https://doi.org/10.1039/C6TC03886G. https://www.osti.gov/servlets/purl/1342920.
@article{osti_1342920,
title = {Photophysical properties of wavelength-tunable methylammonium lead halide perovskite nanocrystals},
author = {Freppon, Daniel J. and Men, Long and Burkhow, Sadie J. and Petrich, Jacob W. and Vela, Javier and Smith, Emily A.},
abstractNote = {Here we present the time-correlated luminescence of isolated nanocrystals of five methylammonium lead mixed-halide perovskite compositions (CH3NH3PbBr3$-$xIx) that were synthesized with varying iodide and bromide anion loading. All analyzed nanocrystals had a spherical morphology with diameters in the range of 2 to 32 nm. The luminescence maxima of CH3NH3PbBr3$-$xIx nanocrystals were tuned to wavelengths ranging between 498 and 740 nm by varying the halide loading. Both CH3NH3PbI3 and CH3NH3PbBr3 nanocrystals exhibited no luminescence intermittency for more than 90% of the 250 s analysis time, as defined by a luminescence intensity three standard deviations above the background. The mixed halide CH3NH3PbBr0.75I0.25, CH3NH3PbBr0.50I0.50, and CH3NH3PbBr0.25I0.75 nanocrystals exhibited luminescence intermittency in 18%, 4% and 26% of the nanocrystals, respectively. Irrespective of luminescence intermittency, luminescence intensities were classified for each nanocrystal as: (a) constant, (b) multimodal, (c) photobrightening, and (d) photobleaching. Finally, based on their photophysics, the CH3NH3PbBr3$-$xIx nanocrystals can be expected to be useful in a wide-range of applications where low and non-intermittent luminescence is desirable, for example as imaging probes and in films for energy conversion devices.},
doi = {10.1039/C6TC03886G},
url = {https://www.osti.gov/biblio/1342920}, journal = {Journal of Materials Chemistry C},
issn = {2050-7526},
number = 1,
volume = 5,
place = {United States},
year = {2016},
month = {11}
}

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Works referencing / citing this record:

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