High-performance graphene-based hole conductor-free perovskite solar cells: Schottky junction enhanced hole extraction and electron blocking

Keyou Yan; Zhanhua Wei; Jinkai Li; Haining Chen; Ya Yi; Xiaoli Zheng; Xia Long; Zilong Wang; Jiannong Wang; Jianbin Xu; Shihe Yang

doi:10.1002/smll.201403348

High-performance graphene-based hole conductor-free perovskite solar cells: Schottky junction enhanced hole extraction and electron blocking

Small. 2015 May 20;11(19):2269-74. doi: 10.1002/smll.201403348. Epub 2015 Jan 15.

Authors

Keyou Yan^{1

2}, Zhanhua Wei¹, Jinkai Li¹, Haining Chen¹, Ya Yi³, Xiaoli Zheng¹, Xia Long¹, Zilong Wang¹, Jiannong Wang³, Jianbin Xu², Shihe Yang¹

Affiliations

¹ Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
² Department of Electronic Engineering, Chinese University of Hong Kong, Shatin, Hong Kong, China.
³ Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.

PMID: 25641809
DOI: 10.1002/smll.201403348

Abstract

Multilayered graphene and single-layered graphene are assembled onto perovskite films in the form of Schottky junctions and ohmic contacts, respectively, for the production of a graphene-based hole transporting material-free perovskite solar cell. Multilayered graphene extracts charge selectively and efficiently, delivering a higher efficiency of 11.5% than single-layered graphene (6.7%).

Keywords: Schottky junctions; hole-selective collection; multilayer graphene; perovskite solar cells.

Publication types

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