Title :
CdTe/CdS core-shell nanowire structures on glass substrates for photovoltaic applications — Growth and characterization
Author :
Halliday, D.P. ; Williams, B.L. ; Durose, K. ; Mendis, B. ; Kartopu, G. ; Irvine, S.J.C. ; Zoppi, G. ; Forbes, I.
Author_Institution :
Dept. of Phys., Durham Univ., Durham, UK
Abstract :
We report the successful growth of CdTe/CdS core-shell structures on a glass substrate using a metamorphic growth approach. The CdTe wires were grown by close space sublimation using the vapor-liquid-solid technique. The CdS shell was grown by chemical bath deposition. Detailed characterization has been undertaken using scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray analysis and low-temperature photoluminescence spectroscopy. This has confirmed the successful growth of these structures. The luminescence properties of core-shell structures show features more commonly observed in single crystals rather than polycrystalline material. These structures show considerable promise for photovoltaic device applications.
Keywords :
II-VI semiconductors; X-ray chemical analysis; cadmium compounds; glass; photoluminescence; scanning electron microscopy; semiconductor growth; solar cells; sublimation; transmission electron microscopy; CdTe-CdS; cadmium sulphide; cadmium telluride; chemical bath deposition; close-space sublimation; core-shell nanowire structures; energy dispersive X-ray analysis; glass substrates; low-temperature photoluminescence spectroscopy; luminescence properties; metamorphic growth approach; photovoltaic device applications; polycrystalline material; scanning electron microscopy; transmission electron microscopy; vapor-liquid-solid technique; Films; Glass; Photovoltaic systems; Substrates; Wires;
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2011 37th IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-9966-3
DOI :
10.1109/PVSC.2011.6185888