title: Flexible carbon nanotube/mono-crystalline Si thin-film solar cells.
abstract: Flexible heterojunction solar cells were fabricated from carbon nanotubes (CNTs) and mono-crystalline Si thin films at room temperature. The Si thin films with thickness less than 50 μm are prepared by chemically etching Si wafer in a KOH solution. The initial efficiency of the thin-film solar cell varies from approximately 3% to 5%. After doping with a few drops of 1 M HNO3, the efficiency increases to 6% with a short-circuit current density of 16.8 mA/cm(2) and a fill factor of 71.5%. The performance of the solar cells depends on the surface state and thickness of Si thin films, as well as the interface of CNT/Si. The flexible CNT/Si thin-film solar cells exhibit good stability in bending-recovery cycles.
authors.affiliation: Key Laboratory for Advanced Materials Processing Technology of Education Ministry; State Key Laboratory of New Ceramic and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Sun
authors.affiliation: Key Laboratory for Advanced Materials Processing Technology of Education Ministry; State Key Laboratory of New Ceramic and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Jinquan
authors.initials: J
authors.lastname: Wei
authors.affiliation: College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Jia
authors.affiliation: Key Laboratory for Advanced Materials Processing Technology of Education Ministry; State Key Laboratory of New Ceramic and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Xian
authors.initials: X
authors.lastname: Cui
authors.affiliation: Key Laboratory for Advanced Materials Processing Technology of Education Ministry; State Key Laboratory of New Ceramic and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Kunlin
authors.initials: K
authors.lastname: Wang
authors.affiliation: Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Dehai
authors.initials: D
authors.lastname: Wu
keywords: Carbon nanotubes; Heterojunction; Si thin film; Solar cell