Intermediate band solar cells based on high-quality multiple-bandgap semiconductor epilayers

2013 Fiscal Year Final Research Report

• Project/Area Number: 24760258
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: Saga University
• Principal Investigator: TANAKA Tooru 佐賀大学, 工学(系)研究科(研究院), 准教授 (20325591)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: 中間バンド型太陽電池 / マルチバンドギャップ / 高不整合材料 / ZnTeO

Research Abstract

In order to realize intermediate band solar cells (IBSCs) based on highly mismatched alloys which has an intermediate band in the original band gap, growth of high-quality ZnTeO-related epilayers is investigated. Zn1-xCdxTe1-yOy (ZnCdTeO) alloys lattice-matched to ZnTe substrates are successfully grown by controlling the Cd and O content. Photogenerated current by two-step photon absorption is observed in ZnCdTeO-based IBSCs. The effects of Al doping in ZnTeO are also investigated in order to enhance optical absorptions associated with the intermediate band.

Research Products

• [Journal Article] Photogenerated current by two-step photon excitation in ZnTeO Intermediate Band Solar Cells with n-ZnO window layer (2014)
  • Author(s): Tooru Tanaka, Masaki Miyabara, Yasuhiro Nagao, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin Man Yu, and Wladek Walukiewicz
  • Journal Title: IEEE Journal of Photovoltaics Volume: 4 Pages: 196-201
  • DOI: 10.7567/JJAP.52.040206
  • Peer Reviewed
• [Journal Article] Development of ZnTe-based solar cells (2013)
  • Author(s): Tooru Tanaka, Masaki Miyabara, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin M. Yu, and Wladek Walukiewicz
  • Journal Title: Materials Science Forum Volume: Vol. 750 Pages: 80-83
  • DOI: 10.4028/www.scientific.net/MSF.750.80
  • Peer Reviewed
• [Journal Article] Molecular beam epitaxial growth of ZnCdTeO epilayers for intermediate band solar cells (2013)
  • Author(s): Tooru Tanaka, Yasuhiro Nagao, Tomohiro Mochinaga, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin M. Yu, and Wladek Walukiewicz
  • Journal Title: Journal of Crystal Growth Volume: 378 Pages: 259-262
  • DOI: 10.1016/j.jcrysgro.2012.12.086
  • Peer Reviewed
• [Journal Article] Surface morphologies and photoluminescence properties of undoped and P-doped ZnTe layers grown by metalorganic vapor phase epitaxy (2013)
  • Author(s): Mitsuhiro Nishio, Yuji Hayashida, Katsuhiko Saito, Tooru Tanaka, Qixin Guo
  • Journal Title: Journal of Crystal Growth Volume: 370 Pages: 348-352
  • DOI: 10.1016/j.jcrysgro.2012.07.020
  • Peer Reviewed
• [Journal Article] Effects of annealing treatment upon electrical and photoluminescence properties of phosphorus-doped ZnMgTe epilayers grown by metalorganic vapor phase epitaxy (2013)
  • Author(s): Mitsuhiro Nishio, Keita Kai, Ryota Fujiki, Katsuhiko Saito, Tooru Tanaka, Qixin Guo
  • Journal Title: Journal of Crystal Growth Volume: 370 Pages: 342-347
  • DOI: 10.1016/j.jcrysgro.2012.07.024
  • Peer Reviewed
• [Journal Article] Band alignment of ZnTe/GaAs heterointerface investigated by synchrotron radiation photoemission spectroscopy (2013)
  • Author(s): Qixin Guo, Kazutoshi Takahashi, Katsuhiko Saito, Hajime Akiyama, Tooru Tanaka, and Mitsuhiro Nishio
  • Journal Title: Applied Physics Letters Volume: 102 Pages: 092107 (4)
  • DOI: 10.1063/1.4794950
  • Peer Reviewed
• [Journal Article] Epitaxial Growth of ZnTe Layers on ZnO Bulk Substrates by Metalorganic Vapor Phase Epitaxy (2013)
  • Author(s): Hajime Akiyama, Hiroyuki Hirano, Katsuhiko Saito, Tooru Tanaka, Mitsuhiro Nishio, and Qixin Guo
  • Journal Title: Japanese Journal of Applied Physics Volume: 52 Pages: 040206 (3)
  • DOI: 10.7567/JJAP.52.040206
  • Peer Reviewed
• [Journal Article] Recombination dynamics and carrier lifetimes in highly mismatched ZnTeO alloys (2013)
  • Author(s): Yan-Cheng Lin, Ming-Jui Tasi, Wu-Ching Chou, and Wen-Hao Chang, Tooru Tanaka, Mitsuhiro Nishio, and Qixin Guo
  • Journal Title: Applied Physics Letters Volume: 103 Pages: 261905 (4)
  • DOI: 10.7567/JJAP.52.040206
  • Peer Reviewed
• [Presentation] ZnTeO-based intermediate band solar cells (2014)
  • Author(s): Tooru Tanaka
  • Organizer: The EMN East Meeting
  • Place of Presentation: Beijing, China
  • Year and Date: 2014-05-12
  • Invited
• [Presentation] Molecular Beam Epitaxial Growth of N-Type ZnS Layers for ZnTeO-Based Intermediate Band Solar Cells (2013)
  • Author(s): Tooru Tanaka, Shin Haraguchi, Masaki Miyabara, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin M. Yu, Wladek Walukiewicz
  • Organizer: 2013 Materials Research Society Fall Meeting
  • Place of Presentation: Boston, MA, W5.14
  • Year and Date: 2013-12-02
• [Presentation] Development of ZnTeO-based Intermediate band solar cells (2013)
  • Author(s): Tooru Tanaka, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin Man Yu, and Wladek Walukiewicz
  • Organizer: The 9th C-K-J Joint Workshop on Advanced Functional Materials
  • Place of Presentation: Saga, I-12
  • Year and Date: 2013-11-25
  • Invited
• [Presentation] Intermediate band solar cells based on ZnTeO (2013)
  • Author(s): Tooru Tanaka
  • Organizer: 9th China SoG Silicon and PV Power Conference (9th CSPV)
  • Place of Presentation: Suzhou, China
  • Year and Date: 2013-11-07
  • Invited
• [Presentation] Growth of n-type ZnS blocking epilayers for ZnTeO-based intermediate band solar cells (2013)
  • Author(s): Tooru Tanaka, Shin Haraguchi, Masaki Miyabara, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin M. Yu, and Wladek Walukiewicz
  • Organizer: 23rd Photovoltaic Science and Engineering Conference
  • Place of Presentation: Taipei, Taiwan, 4-P-4
  • Year and Date: 2013-10-31
• [Presentation] Two-step photon absorption in intermediate band solar cells based on ZnTeO (2013)
  • Author(s): Tooru Tanaka, Shin Haraguchi, Masaki Miyabara, Katsuhiko Saito, Qixin Guo, Mitsuhiro Nishio, Kin M. Yu, and Wladek Walukiewicz
  • Organizer: The 8th International Conference on Thin film Physics and Applications
  • Place of Presentation: Shanghai, China, 5.26
  • Year and Date: 2013-09-21
• [Presentation] Photogenerated current by two-step photon excitation in ZnTeO Intermediate Band Solar Cells (2013)
  • Author(s): T. Tanaka, M. Miyabara, Y. Nagao, K. Saito, Q. Guo, M. Nishio, K. M. Yu, W. Walukiewicz
  • Organizer: 38th IEEE Photovoltaic Specialists Conference
  • Place of Presentation: Tampa, Florida, 447
  • Year and Date: 2013-06-19
• [Presentation] Synthesis and Optical Properties of ZnTe1-xOx Highly Mismatched Alloys for Intermediate Band Solar Cells (2012)
  • Author(s): T. Tanaka, T. Mochinaga, K. Saito, Q. Guo, M. Nishio, K. M. Yu, W. Walukiewicz
  • Organizer: 37th IEEE Photovoltaic Specialists Conference
  • Place of Presentation: Austin, Texas
  • Year and Date: 20120603-08
• [Presentation] Green LEDs and Solar Cells based on ZnTe-related Materials (2012)
  • Author(s): Tooru Tanaka
  • Organizer: Conference on Lasers and Electro-Optics 2012 (CLEO : 2012)
  • Place of Presentation: San Jose. JTh4J.4
  • Year and Date: 20120506-11
  • Invited
• [Presentation] ZnTe系材料の物性と光デバイス応用 (2012)
  • Author(s): 田中徹
  • Organizer: 平成24年度応用物理学会九州支部,支部オータムスクール
  • Place of Presentation: 佐賀大学, As-3
  • Year and Date: 2012-12-02
  • Invited
• [Presentation] 太陽電池の基礎と応用 (2012)
  • Author(s): 田中徹
  • Organizer: 第2回九州若手セラミックフォーラム
  • Place of Presentation: 佐賀市
  • Year and Date: 2012-09-01
  • Invited
• [Remarks]
  • URL: http://www.sc.ec.saga-u.ac.jp/