Intercalation crystallization of phase-pure α-HC(NH₂)₂PbI₃ upon microstructurally engineered PbI₂ thin films for planar perovskite solar cells

Yuanyuan Zhou; Mengjin Yang; Joonsuh Kwun; Onkar S Game; Yixin Zhao; Shuping Pang; Nitin P Padture; Kai Zhu

doi:10.1039/c5nr06189j

Intercalation crystallization of phase-pure α-HC(NH₂)₂PbI₃ upon microstructurally engineered PbI₂ thin films for planar perovskite solar cells

Nanoscale. 2016 Mar 28;8(12):6265-70. doi: 10.1039/c5nr06189j.

Authors

Yuanyuan Zhou¹, Mengjin Yang², Joonsuh Kwun¹, Onkar S Game¹, Yixin Zhao³, Shuping Pang⁴, Nitin P Padture¹, Kai Zhu²

Affiliations

¹ School of Engineering, Brown University, Providence, RI 02912, USA. nitin_padture@brown.edu.
² Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO 80401, USA. kai.zhu@nrel.gov.
³ School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.
⁴ Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P.R. China.

PMID: 26549434
DOI: 10.1039/c5nr06189j

Abstract

The microstructure of the solid-PbI2 precursor thin film plays an important role in the intercalation crystallization of the formamidinium lead triiodide perovskite (α-HC(NH2)2PbI3). It is shown that microstructurally engineered PbI2 thin films with porosity and low crystallinity are the most favorable for conversion into uniform-coverage, phase-pure α-HC(NH2)2PbI3 perovskite thin films. Planar perovskite solar cells fabricated using these thin films deliver power conversion efficiency (PCE) up to 13.8%.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.