Title :
Effect of buffer layer composition and surface features on large area and high efficiency CuInxGa1−xSe2 solar cells
Author :
Kumar, T.P. ; Maeng Jun Kim ; Hojung Jeong ; Sehyun Hwang ; Tarwal, N.L. ; Yon Kil Jeong ; Jae Hyung Jang
Author_Institution :
Res. Inst. for Solar & Sustainable Energies (RISE), Gwangju Inst. of Sci. & Technol. (GIST), Gwangju, South Korea
Abstract :
CuInxGa1-xSe2 (CIGS) solar cell junction properties were tailored by altering the buffer layer properties by chemical bath deposition method. An efficiency of > 12% was observed in large area of 5 cm2. Thickness of the CdS buffer layer was measured by cross-view scanning electron microscopy. CdS buffer layer condition was optimized after several attempts made and was found to be the CIGS solar cell performance was mainly influenced by CdS buffer layer composition ratio. The effect of CdS buffer layer surface morphology, composition, optical transmittance and thickness oriented CIGS solar cell efficiency are presented and discussed.
Keywords :
copper compounds; elemental semiconductors; gallium compounds; indium compounds; liquid phase deposition; scanning electron microscopy; selenium compounds; solar cells; ternary semiconductors; thickness measurement; CIGS solar cell junction properties; CuInxGa1-xSe2; cadmium sulfide buffer layer morphology; cadmium sulfide buffer layer optical transmittance; cadmium sulfide buffer layer surface composition feature effect; cadmium sulfide buffer layer surface feature effect; cadmium sulfide buffer layer thickness measurement; chemical bath deposition method; cross-view scanning electron microscopy; high efficiency copper indium gallium diselenide solar cells; Buffer layers; Chemicals; Optical buffering; Photovoltaic cells; Surface morphology; Surface treatment; Zinc oxide; Buffer layer; CdS; Chemical bath deposition (CBD); Copper indium gallium diselenide (CIGS); Solar cells;
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th
Conference_Location :
Tampa, FL
DOI :
10.1109/PVSC.2013.6744862
