Vapor and healing treatment for CH sub(3)NH sub(3)PbI sub(3 -x)Cl sub(x) films toward large-area perovskite solar cells
Hybrid methyl-ammonium lead trihalide perovskites are promising low-cost materials for use in solar cells and other optoelectronic applications. With a certified photovoltaic conversion efficiency record of 20.1%, scale-up for commercial purposes is already underway. However, preparation of large-ar...
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Veröffentlicht in: | Nanoscale 2016-03, Vol.8 (12), p.6386-6392 |
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creator | Gouda, Laxman Gottesman, Ronen Tirosh, Shay Haltzi, Eynav Hu, Jiangang Ginsburg, Adam Keller, David A Bouhadana, Yaniv Zaban, Arie |
description | Hybrid methyl-ammonium lead trihalide perovskites are promising low-cost materials for use in solar cells and other optoelectronic applications. With a certified photovoltaic conversion efficiency record of 20.1%, scale-up for commercial purposes is already underway. However, preparation of large-area perovskite films remains a challenge, and films of perovskites on large electrodes suffer from non-uniform performance. Thus, production and characterization of the lateral uniformity of large-area films is a crucial step towards scale-up of devices. In this paper, we present a reproducible method for improving the lateral uniformity and performance of large-area perovskite solar cells (32 cm super(2)). The method is based on methyl-ammonium iodide (MAI) vapor treatment as a new step in the sequential deposition of perovskite films. Following the MAI vapor treatment, we used high throughput techniques to map the photovoltaic performance throughout the large-area device. The lateral uniformity and performance of all photovoltaic parameters (V sub(oc), J sub(sc), Fill Factor, Photo-conversion efficiency) increased, with an overall improved photo-conversion efficiency of similar to 100% following a vapor treatment at 140 degree C. Based on XRD and photoluminescence measurements, We propose that the MAI treatment promotes a "healing effect" to the perovskite film which increases the lateral uniformity across the large-area solar cell. Thus, the straightforward MAI vapor treatment is highly beneficial for large scale commercialization of perovskite solar cells, regardless of the specific deposition method. |
doi_str_mv | 10.1039/c5nr08658b |
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The lateral uniformity and performance of all photovoltaic parameters (V sub(oc), J sub(sc), Fill Factor, Photo-conversion efficiency) increased, with an overall improved photo-conversion efficiency of similar to 100% following a vapor treatment at 140 degree C. Based on XRD and photoluminescence measurements, We propose that the MAI treatment promotes a "healing effect" to the perovskite film which increases the lateral uniformity across the large-area solar cell. 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The lateral uniformity and performance of all photovoltaic parameters (V sub(oc), J sub(sc), Fill Factor, Photo-conversion efficiency) increased, with an overall improved photo-conversion efficiency of similar to 100% following a vapor treatment at 140 degree C. Based on XRD and photoluminescence measurements, We propose that the MAI treatment promotes a "healing effect" to the perovskite film which increases the lateral uniformity across the large-area solar cell. 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source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
subjects | Deposition Devices Electrodes Healing Perovskites Photovoltaic cells Solar cells Variability |
title | Vapor and healing treatment for CH sub(3)NH sub(3)PbI sub(3 -x)Cl sub(x) films toward large-area perovskite solar cells |
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