title: Structure engineering of hole-conductor free perovskite-based solar cells with low-temperature-processed commercial carbon paste as cathode.
abstract: Low-temperature-processed (100 °C) carbon paste was developed as counter electrode material in hole-conductor free perovskite/TiO2 heterojunction solar cells to substitute noble metallic materials. Under optimized conditions, an impressive PCE value of 8.31% has been achieved with this carbon counter electrode fabricated by doctor-blading technique. Electrochemical impedance spectroscopy demonstrates good charge transport characteristics of low-temperature-processed carbon counter electrode. Moreover, this carbon counter electrode-based perovskite solar cell exhibits good stability over 800 h.
authors.affiliation: Institute of Artificial Photosynthesis, State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology (DUT) , 2 Linggong Road, 116024 Dalian, China.
authors.forename: Fuguo
authors.initials: F
authors.lastname: Zhang
authors.forename: Xichuan
authors.initials: X
authors.lastname: Yang
authors.forename: Haoxin
authors.initials: H
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Cheng
authors.forename: Jianghua
authors.initials: J
authors.lastname: Zhao
authors.forename: Licheng
authors.initials: L
authors.lastname: Sun
keywords: commercial carbon paste; heterojunction solar cell; hole−conductor free; low temperature; perovskite