Issue 88, 2017, Issue in Progress

Effects of the additives n-propylammonium or n-butylammonium iodide on the performance of perovskite solar cells

Abstract

Organic–inorganic lead halide perovskite solar cells (PSCs) offer a promising low-cost manufactural solar technology as they are compatible with large-scale and low-temperature (<100 °C) solution processes. Through the optimization of perovskite active layer and phenyl-C61-butyric acid methyl ester (PC61BM) layer thickness, the normal cells showed 9.7% power conversion efficiency (PCE). Compared with the corresponding normal devices, we observed an improvement in PCE from 9.7% to 11.3% and 10.2% for the devices prepared using 1 vol% of C3H7NH3I and 1 vol% of C4H9NH3I as additives, respectively. Via analysis by ultraviolet-visible (UV-vis) spectroscopy, grazing incidence wide angle X-ray diffraction (GIWAXS), and field emission scanning electron microscopy (FE-SEM), we concluded that the morphological changes, absorption, and crystallinity of the perovskite films played an important role that influenced the performance of the PSC devices with various additives. The presence of 1% of C3H7NH3I or 1% of C4H9NH3I caused the CH3NH3PbI3−xClx films to grow uniformly with high coverage and continuous phase, as well as with higher absorption; this enabled the corresponding devices to display improved performance.

Graphical abstract: Effects of the additives n-propylammonium or n-butylammonium iodide on the performance of perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
13 Oct 2017
Accepted
27 Nov 2017
First published
11 Dec 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 55986-55992

Effects of the additives n-propylammonium or n-butylammonium iodide on the performance of perovskite solar cells

C. Hsieh, Y. Yu, C. Chen and S. Chuang, RSC Adv., 2017, 7, 55986 DOI: 10.1039/C7RA11286F

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