title: Carbon nanotube-amorphous silicon hybrid solar cell with improved conversion efficiency.
abstract: We report a hybrid solar cell based on single walled carbon nanotubes (SWNTs) interfaced with amorphous silicon (a-Si). The high quality carbon nanotube network was dry transferred onto intrinsic a-Si forming Schottky junction for metallic SWNT bundles and heterojunctions for semiconducting SWNT bundles. The nanotube chemical doping and a-Si surface treatment minimized the hysteresis effect in current-voltage characteristics allowing an increase in the conversion efficiency to 1.5% under an air mass 1.5 solar spectrum simulator. We demonstrated that the thin SWNT film is able to replace a simultaneously p-doped a-Si layer and transparent conductive electrode in conventional amorphous silicon thin film photovoltaics.
authors.affiliation: Department of Applied Physics, Aalto University, PO Box 15100, FI-00076 Aalto, Finland. School of Energy Studies, Savitribai Phule Pune University (formerly University of Pune), Ganeshkhind, Pune-411007, India.
authors.forename: Adinath M
authors.initials: AM
authors.lastname: Funde
authors.forename: Albert G
authors.initials: AG
authors.lastname: Nasibulin
authors.forename: Hashmi Gufran
authors.initials: HG
authors.lastname: Syed
authors.forename: Anton S
authors.initials: AS
authors.lastname: Anisimov
authors.forename: Alexey
authors.initials: A
authors.lastname: Tsapenko
authors.forename: Peter
authors.initials: P
authors.lastname: Lund
authors.forename: J D
authors.initials: JD
authors.lastname: Santos
authors.forename: I
authors.initials: I
authors.lastname: Torres
authors.forename: J J
authors.initials: JJ
authors.lastname: Gandía
authors.forename: J
authors.initials: J
authors.lastname: Cárabe
authors.forename: A D
authors.initials: AD
authors.lastname: Rozenberg
authors.forename: Igor A
authors.initials: IA
authors.lastname: Levitsky