Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
Volume 45, Issue 4A, Pages 2618-2620Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.45.2618
Keywords
cu(InGa)Se-2; chemical bath deposition; buffer layer; ZnO; Mg(OH)(2)
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ZnO and Mg(OH)(2) thin films were grown by chemical bath deposition (CBD) and applied to the fabrication of Cu(InGa)(SSe)(2) (CIGSSe) solar cells. From the X-ray diffraction (XRD) measurements, the CBD-ZnO film was preferentially oriented toward the (002) plane and the CBD-Mg(OH)(2) film was oriented toward the (001) plane. The optical and electrical properties of CBD-ZnO and CBD-Mg(OH)(2) thin films on a fused silica substrate were investigated and it was found that the films showed a high resistivity and a high transmittance in the visible light wavelength regions. A cell efficiency of 14.3% (V-oc: 557 mV, J(SC): 35.5 mA/cm(2), F.F.: 0.721) was achieved using a CBD-ZnO buffer layer.
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