Structure of Methylammonium Lead Iodide Within Mesoporous Titanium Dioxide: Active Material in High-Performance Perovskite Solar Cells
Top Cited Papers
- 22 November 2013
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 14 (1), 127-133
- https://doi.org/10.1021/nl403514x
Abstract
We report the structure of methylammonium lead(II) iodide perovskite in mesoporous TiO2, as used in high-performance solar cells. Pair distribution function analysis of X-ray scattering reveals a two component nanostructure: one component with medium range crystalline order (30 atom %) and another with only local structural coherence (70 atom %). The nanostructuring correlates with a blueshift of the absorption onset and increases the photoluminescence. Our findings underscore the importance of fully characterizing and controlling the structure for improved solar cell efficiency.Keywords
Funding Information
- U.S. Department of Energy (DE-AC02-98CH10886)
- Basic Energy Sciences, Office of Science, U.S. Department of Energy (DE-SC0001085)
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