Photovoltaics. Interface engineering of highly efficient perovskite solar cells

Huanping Zhou; Qi Chen; Gang Li; Song Luo; Tze-bing Song; Hsin-Sheng Duan; Ziruo Hong; Jingbi You; Yongsheng Liu; Yang Yang

doi:10.1126/science.1254050

Photovoltaics. Interface engineering of highly efficient perovskite solar cells

Science. 2014 Aug 1;345(6196):542-6. doi: 10.1126/science.1254050.

Authors

Affiliations

¹ Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA. California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.
² Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA.
³ Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA. California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA. yangy@ucla.edu.

PMID: 25082698
DOI: 10.1126/science.1254050

Abstract

Advancing perovskite solar cell technologies toward their theoretical power conversion efficiency (PCE) requires delicate control over the carrier dynamics throughout the entire device. By controlling the formation of the perovskite layer and careful choices of other materials, we suppressed carrier recombination in the absorber, facilitated carrier injection into the carrier transport layers, and maintained good carrier extraction at the electrodes. When measured via reverse bias scan, cell PCE is typically boosted to 16.6% on average, with the highest efficiency of ~19.3% in a planar geometry without antireflective coating. The fabrication of our perovskite solar cells was conducted in air and from solution at low temperatures, which should simplify manufacturing of large-area perovskite devices that are inexpensive and perform at high levels.

Publication types

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