Characteristics of CuInSe/sub 2/ Bridgman ingots grown with sodium [solar cell manufacture]

作者: H.P. Wang , I. Shih , C.H. Champness

DOI: 10.1109/PVSC.2000.915925

关键词:

摘要: Crystals of CuInSe/sub 2/ were grown by a horizontal Bridgman method for the first time with metallic sodium. The amount sodium was varied levels at 0.05, 0.25 and 2 at.% approximately. However, as content increased, crystalline quality decreased. Hot probe measurements showed that ingots higher (0.25 at.%) n-type, while ingot about 0.05 p-type. Electron microanalysis an Auger profile no detectable (i.e.<0.1 in ingots, even up to added melt. X-ray Laue back reflection, performed on as-grown surface p-type ingot, confirmed region be single crystal. Powder diffraction patterns chalcopyrite structure all Resistivity carrier mobility these obtained Hall effect measurements. Metallic also introduced into already-grown monocrystals within sealed glass ampoule characteristics samples analyzed.

参考文章(9)
Tokio Nakada, Daisuke Iga, Hiroki Ohbo, Akio Kunioka, Effects of Sodium onCu(In,Ga)Se2-Based Thin Films and Solar Cells Japanese Journal of Applied Physics. ,vol. 36, pp. 732- 737 ,(1997) , 10.1143/JJAP.36.732
L.S. Yip, I. Shih, C.H. Champness, Method of avoiding ampoule adhesion of ingots in Bridgman growth of CuInSe2 Journal of Crystal Growth. ,vol. 129, pp. 102- 106 ,(1993) , 10.1016/0022-0248(93)90438-3
Z.A. Shukri, C.H. Champness, I. Shih, Boron nitride powder coating of ampoule for Bridgman-grown CuInSe2 Journal of Crystal Growth. ,vol. 129, pp. 107- 110 ,(1993) , 10.1016/0022-0248(93)90439-4
D. Braunger, D. Hariskos, G. Bilger, U. Rau, H.W. Schock, Influence of sodium on the growth of polycrystalline Cu(In,Ga)Se2 thin films Thin Solid Films. ,vol. 361, pp. 161- 166 ,(2000) , 10.1016/S0040-6090(99)00777-4
Z. A. Shukri, C. H. Champness, Cleavage and Twinning in CuInSe2 Crystals Acta Crystallographica Section B-structural Science. ,vol. 53, pp. 620- 630 ,(1997) , 10.1107/S0108768197004539
S.M. Wasim, Transport properties of CuInSe2 Solar Cells. ,vol. 16, pp. 289- 316 ,(1986) , 10.1016/0379-6787(86)90091-8
David W. Niles, Kannan Ramanathan, Falah Hasoon, Rommel Noufi, Brian J. Tielsch, Julia E. Fulghum, Na impurity chemistry in photovoltaic CIGS thin films: Investigation with x-ray photoelectron spectroscopy Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. ,vol. 15, pp. 3044- 3049 ,(1997) , 10.1116/1.580902
David W. Niles, Mowafak Al-Jassim, Kannan Ramanathan, Direct observation of Na and O impurities at grain surfaces of CuInSe2 thin films Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. ,vol. 17, pp. 291- 296 ,(1999) , 10.1116/1.581583
W.W. Lam, I. Shih, Crystal growth of CuGaxIn1−xSe2 by horizontal bridgman method Solar Energy Materials and Solar Cells. ,vol. 50, pp. 111- 117 ,(1998) , 10.1016/S0927-0248(97)00131-1