Stabilization of PN Heterojunetion between Cu(IhGa)Se_2 Thin-Film Absorber and ZnO Window with Zn(O, S, OH)_x Buffer

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概要

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• Dramatic improvement of current-voltage(I-V)performance, especially the fill factor(FF)observed in the Cu(InGa)Se_2-based thin-film circuits with Zn(O, S, OH)_x, buffer after postdeposition light soaking is discussed in this study. Considering the composition of Zn(O, S, OH)_x buffer and the reversible behavior with respect to postdeposition light soaking, a model is proposed, in which H_2O molecules released by the dehydration of Zn(OH)_2 in the Zn(O, S, OH)_x buffer are considered to play a dominant role in this behavior. Based upon this model, attempts to stabilize the pn heterojunction by making the reversible behavior irreversible are, for the first time, successfully achieved by adjusting the postdeposition light-soaking conditions. The reduction of the Zn(OH)_2 concentration in the Zn(O, S, OH)_x buffer through the combination of heating at 130℃ for at least 40 min and irradiation using a constant-light solar simulator contributes to stabilizing the pn heterojunction and improving the I-V performance as well as the electrical yield.

• 社団法人応用物理学会の論文
• 2000-05-15

著者

• KUSHIYA Katsumi

  Showa Shell Sekiyu K.K. Central R&D Lab.

• YAMASE Osamu

  Showa Shell Sekiyu K. K., Central R & D Laboratory

• Yamase Osamu

  Showa Shell Sekiyu K.k. Central R&d Lab(arl)

• Kushiya Katsumi

  Showa Shell Sekiyu K.k Central R&d Laboratory (arl)

• Kushiya Katsumi

  Showa Shell Sekiyu K.k. Central R&d Lab(arl)

関連論文

• Developmemt of High-Efficiency CuIn_xGa_Se_2 Thin-Film Solar Cells by Selenization with Elemental Se Vapor in Vacuum
• Polycrystalline Cu(InGa)Se_2 Thin-Film Solar Cells with ZnSe Buffer Layers
• Annealing Enhancement Effect by Light Illumination on Proton Irradiated Cu(In,Ga)Se_2 Thin-Film Solar Cells : Nuclear Science, Plasmas, and Electric Discharges
• Optimization of Al-doped ZnO Window Layers for Large-Area Cu(InGa)Se_2-Based Modules by RF/DC/DC Multiple Magnetron Sputtering
• Development of Polycrystalline Culn_xGa_Se_2 Thin-Film Solar Cells with Band Gap of 1.3 to 1.5 eV
• Application of Stacked ZnO Films as a Window Layer to Cu(InGa)Se_2-Based Thin-Film Modules
• Stabilization of PN Heterojunetion between Cu(IhGa)Se_2 Thin-Film Absorber and ZnO Window with Zn(O, S, OH)_x Buffer
• Application of Zn-Compound Buffer Layer for Polycrystalline CuInSe_2-Based Thin-Film Solar Cells
• Application of Stacked ZnO Films as a Window Layer to Cu(InGa)Se2-Based Thin-Film Modules

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