Carrier Transport in Polycrystalline Silicon Photovoltaic Layer on Highly Textured Substrate
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概要
- 論文の詳細を見る
Electrical conductivities along the growth direction of undoped polycrystalline silicon (poly-Si) thin films deposited by plasma enhanced chemical vapor deposition on various textured substrates aiming for enhancing light trapping have been investigated using an AC conductivity measurement technique. Temperature dependence of electron and hole conductivities reveals that the Fermi level of poly-Si on the mildly textured substrates is located at the center of the band gap and this material is 'truly' intrinsic. On the other hand, poly-Si on the highly textured substrate exhibits $n$-type characteristic even though none of the deposition conditions for poly-Si is changed. The change in the electrical properties is induced by structural changes, especially the reduction in the degree of (220) crystallographic preferential orientation of poly-Si on highly textured substrates. Furthermore, photovoltaic performances of the poly-Si pin thin film solar cells fabricated on the textured substrates have been investigated and discussed from the result of electric-field-dependent carrier transport and collection.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-11-15
著者
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Muhida Riza
Department Of Systems Innovation Graduate School Of Engineering Science Osaka University
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Honda Shinya
Department Of Biological Science And Technology And Tissue Engineering Research Center Tokyo Univers
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HARANO Tomokazu
Department of Systems Innovation, Graduate School of Engineering Science, Osaka University
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OKAJIMA Masaya
Department of Systems Innovation, Graduate School of Engineering Science, Osaka University
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Hamakawa Yoshihiro
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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Okamoto Hiroaki
Department Of Advanced Materials Science And Engineering Faculty Of Engineering Yamaguchi University
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Takakura Hideyuki
Department Of Electrical Engineering Faculty Of Engineering Science Osaka University
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Kawamura Tomohiro
Department Of General Thoracic Surgery Osaka University Graduate School Of Medicine
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Toyama Toshihiko
Department Of Physical Science Graduate School Of Engineering Science
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Hamakawa Yoshihiro
Department of Photonics, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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MATSUI Takuya
Department of Pediatrics and Pediatric Intensive Care Medicine, Tokyo Women's Medical University Yachiyo Medical Center
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Matsui Takuya
Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Okamoto Hiroaki
Department of Advanced Materials and Science, Faculty of Engineering, Yamaguchi University
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