Efficient hybrid organic/inorganic photovoltaic cells utilizing n-type pentacene and intrinsic/p-type hydrogenated amorphous silicon

Ching Hsun Chao, Chien Hung Chan, Fu Chiao Wu, Jung Jie Huang, Shui Yang Lien, Ko Wei Weng, Horng Long Cheng

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We demonstrate efficient hybrid inorganic/organic pin photovoltaic (PV) devices with a p-type-doped hydrogenated amorphous silicon (a-Si:H), intrinsic a-Si:H, and an organic semiconductor, pentacene. The correlation between the electrical properties of the PV devices and the morphological properties of the pentacene films were investigated using absorption spectroscopy, X-ray diffraction, and scanning electron microscopy. The maximum power conversion efficiency can be increased by one order with respect to the devices using different thicknesses of a pentacene layer from 0.32% at 10 nm to above 3.0% at 30 nm. Photocarriers in PVs are suggested to be mainly generated in the intrinsic a-Si:H layer. The pentacene layer is used as the exciton-blocking and electron-transport layer. Thus, the structural quality of pentacene films plays an important role in PV performance.

Original languageEnglish
Pages (from-to)2407-2411
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume95
Issue number8
DOIs
Publication statusPublished - 2011 Aug 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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