Room-Temperature, Hydrochloride-Assisted, One-Step Deposition for Highly Efficient and Air-Stable Perovskite Solar Cells.

Pan, Jinlong; Mu, Cheng; Li, Qi; Li, Weizhen; Ma, Ding; Xu, Dongsheng · Adv Mater · 2016

basic_science · Level V

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Abstract

Uniform perovskite films are achieved by HCl-assisted one-step spin-coating at room temperature. By this method, a highest power conversion efficiency of 17.9% is obtained for perovskite solar cells (PSCs). The devices retain ≈95% of their original efficiency after storage in air for two months. The highest efficiency obtained for large-area PSCs (0.86 cm<sup>2</sup> ) is 15.7%.