title: A hybrid solar cell fabricated using amorphous silicon and a fullerene derivative.
abstract: Hybrid solar cells, based on organic and inorganic semiconductors, are a promising way to enhance the efficiency of solar cells because they make better use of the solar spectrum and are straightforward to fabricate. We report on a new hybrid solar cell comprised of hydrogenated amorphous silicon (a-Si:H), [6,6]-phenyl-C71-butyric acid methyl ester ([71]PCBM), and poly-3,4-ethylenedioxythiophene poly styrenesulfonate (PEDOT:PSS). The properties of these PEDOT:PSS/a-Si:H/[71]PCBM devices were studied as a function of the thickness of the a-Si:H layer. It was observed that the open circuit voltage and the short circuit current density of the device depended on the thickness of the a-Si:H layer. Under simulated one sun AM 1.5 global illumination (100 mW cm(-2)), a power conversion efficiency of 2.84% was achieved in a device comprised of a 274 nm-thick layer of a-Si:H; this is the best performance achieved to date for a hybrid solar cell made of amorphous Si and organic materials.
authors.affiliation: Interdisciplinary School of Green Energy and KIER-UNIST Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea. jykim@unist.ac.kr.
authors.forename: Myoung Hee
authors.initials: MH
authors.lastname: Yun
authors.forename: Ji Hoon
authors.initials: JH
authors.lastname: Jang
authors.forename: Kyung Min
authors.initials: KM
authors.lastname: Kim
authors.forename: Hee-eun
authors.initials: HE
authors.lastname: Song
authors.forename: Jeong Chul
authors.initials: JC
authors.lastname: Lee
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim