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Hybrid Heterojunction and Solid‐State Photoelectrochemical Solar Cells
Author(s) -
Li Xiao,
Zang Xiaobei,
Li Xinming,
Zhu Miao,
Chen Qiao,
Wang Kunlin,
Zhong Minlin,
Wei Jinquan,
Wu Dehai,
Zhu Hongwei
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201400224
Subject(s) - materials science , heterojunction , energy conversion efficiency , electrolyte , photoelectrochemical cell , solar cell , optoelectronics , open circuit voltage , schottky barrier , schottky diode , hybrid solar cell , polymer solar cell , nanotechnology , voltage , electrode , electrical engineering , chemistry , diode , engineering
A hybrid heterojunction and solid‐state photoelectrochemical solar cell based on graphene woven fabrics (GWFs) and silicon is designed and fabricated. The GWFs are transferred onto n‐Si to form a Schottky junction with an embedded polyvinyl alcohol based solid electrolyte. In the hybrid solar cell, solid electrolyte serves three purposes simutaneously; it is an anti‐reflection layer, a chemical modification carrier, and a photoelectrochemical channel. The open‐circuit voltage, short‐circuit current density, and fill factor are all significantly improved, achieving an impressive power conversion efficiency of 11%. Solar cell models are constructed to confirm the hybrid working mechanism, with the heterojunction junction and photoelectrochemical effect functioning synergistically.