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Title: Room temperature, air crystallized perovskite film for high performance solar cells

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/c6ta02918c· OSTI ID:1346740
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [1]
  1. South Dakota State Univ., Brookings, SD (United States)
  2. Indian Institute of Technology, Ropar (India)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, Chicago, IL (United States)
+ Show Author Affiliations

For the first time, room temperature heating free growth and crystallization of perovskite films in ambient air without the use of thermal annealing is reported. Highly efficient perovskite nanorod-based solar cells were made using ITO/PEDOT:PSS/CH3NH3PbI3 nanorods/PC60BM/rhodamine/Ag. All the layers except PEDOT:PSS were processed at room temperature thereby eliminating the need for thermal treatment. Perovskite films were spin coated inside a N-2 filled glovebox and immediately were taken outside in air having 40% relative humidity (RH). Exposure to humid air was observed to promote the crystallization process in perovskite films even at room temperature. Perovskite films kept for 5 hours in ambient air showed nanorod-like morphology having high crystallinity, with devices exhibiting the highest PCE of 16.83%, which is much higher than the PCE of 11.94% for traditional thermally annealed perovskite film based devices. Finally, it was concluded that moisture plays an important role in room temperature crystallization of pure perovskite nanorods, showing improved optical and charge transport properties, which resulted in high performance solar cells.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Aeronautics and Space Administration (NASA); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1346740
Journal Information:
Journal of Materials Chemistry. A, Vol. 4, Issue 26; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 59 works
Citation information provided by
Web of Science

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Cited By (11)

Steering the crystallization of perovskites for high-performance solar cells in ambient air journal January 2019
Inducing Crystallinity of Metal Thin Films with Weak Magnetic Fields without Thermal Annealing journal September 2018
Improved Performance of Carbon Electrode Perovskite Solar Cells Using Urea Treatment in Two‐Step Processing journal February 2020
Perovskite Thin Film Consisting with One-Dimensional Nanowires journal September 2018
Effect of Different CH3NH3PbI3 Morphologies on Photovoltaic Properties of Perovskite Solar Cells journal May 2018
Semitransparent CH 3 NH 3 PbI 3 Films Achieved by Solvent Engineering for Annealing- and Electron Transport Layer-Free Planar Perovskite Solar Cells journal March 2018
Tuning Hole Transport Layer Using Urea for High‐Performance Perovskite Solar Cells journal December 2018
Nanoscale control of grain boundary potential barrier, dopant density and filled trap state density for higher efficiency perovskite solar cells journal November 2019
Synergistic engineering of hole transport materials in perovskite solar cells journal November 2019
Highly Efficient Perovskite Solar Cell Photocharging of Lithium Ion Battery Using DC-DC Booster journal January 2017
Effect of Water, Oxygen, and Air Exposure on CH 3 NH 3 PbI 3– x Cl x Perovskite Surface Electronic Properties journal September 2018

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