Structured Macroporous Silicon/Graphene Heterojunction for Efficient Photoconversion

• Published in: Angewandte Chemie International Edition Vol. 49; no. 30; pp. 5106 - 5109
• Main Authors: Yu, Hongtao, Chen, Shuo, Fan, Xinfei, Quan, Xie, Zhao, Huimin, Li, Xinyong, Zhang, Yaobin
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley-VCH Verlag 12.07.2010; WILEY-VCH Verlag; WILEY‐VCH Verlag
• Subjects: energy conversion; graphene; photoelectrics; silicon; thin films

New roles of graphene as a protective layer and transparent charge collector are demonstrated in a structured macroporous Si (MPSi)/graphene (Gr) heterojunction, which shows stable photocurrent (see picture) and a maximum photoconversion efficiency of 2.36 % in 0.05 M H2SO4 without adding a redox pa...