High-Performance Nanostructured Inorganic−Organic Heterojunction Solar Cells

Jeong Ah Chang(Korea Research Institute of Chemical Technology), Jae Hui Rhee(Korea Research Institute of Chemical Technology), Sang Hyuk Im(Korea Research Institute of Chemical Technology), Yong Hui Lee(Korea Research Institute of Chemical Technology), Hi-jung Kim(Korea Research Institute of Chemical Technology), Sang Il Seok(Korea Research Institute of Chemical Technology), Mohammad Khaja Nazeeruddin(École Polytechnique Fédérale de Lausanne), Michaël Grätzel(École Polytechnique Fédérale de Lausanne)
Nano Letters
May 28, 2010
10.1021/nl101322h
Cited by 554Open Access
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Abstract

We report all solid-state nanostructured inorganic-organic heterojunction solar cells fabricated by depositing Sb(2)S(3) and poly(3-hexylthiophene) (P3HT) on the surface of a mesoporous TiO(2) layer, where Sb(2)S(3) acts as an absorbing semiconductor and P3HT acts as both a hole conductor and light absorber. These inorganic-organic light harvesters perform remarkably well with a maximum incident-photon-to-current efficiency (IPCE) of 80% and power conversion efficiency of 5.13% under air-mass 1.5 global (AM 1.5G) illumination with the intensity of 100 mW cm(-2). These devices are highly stable under room light in air, even without encapsulation. The present findings offer novel directions for achieving high-efficiency solid-state solar cells by hybridization of inorganic-organic light harvesters and hole transporters.

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