DocumentCode :
460119
Title :
Growth of Cu In1-x Alx Se2 Thin Films by Selenization of Metallic Precursors in Se Vapor
Author :
Jae Ho Yun ; Chalapathy, R.B.V. ; Se Jin Ahn ; Jeong Chul Lee ; Song, Jinsoo ; Kyung Hoon Yoon
Author_Institution :
Photovoltaic Res. Group, Korea Inst. of Energy Res., Daejeon
Volume :
1
fYear :
2006
fDate :
38838
Firstpage :
579
Lastpage :
581
Abstract :
The wide band-gap CuIn1-xAlxSe2(CIAS) films were obtained by selenization process of metallic precursors. The metallic precursors were deposited sequentially by using sputtering system. As the ratio of Al/(Al+ln) in the precursors increased, the chalcopyrite (112) peak shifted to high value and the band-gap of CIAS layer increased to 1.38 eV. However the bilayer morphology with well crystallized large grain on the surface and small grain thin bottom layer was observed. Although the sequences of precursors were changed in order to get uniform layer, the distinguishable difference was not observed. Moreover the films were peeled off completely during the deposition of buffer CdS. The other process conditions such as selenizing at high temperatures, Se containing precursors and post annealing will be tried to remove the bilayer and to get homogeneous films
Keywords :
annealing; buffer layers; copper compounds; indium compounds; semiconductor growth; semiconductor thin films; sputter deposition; ternary semiconductors; CuIn1-xAlxSe2; bilayer morphology; buffer deposition; homogeneous films; metallic precursors; post annealing; selenization process; sputtering system; thin film growth; wide band-gap semiconductor films; Annealing; Crystallization; Optical materials; Photonic band gap; Photovoltaic cells; Pressure control; Sputtering; Substrates; Temperature; Transistors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
1-4244-0017-1
Electronic_ISBN :
1-4244-0017-1
Type :
conf
DOI :
10.1109/WCPEC.2006.279522
Filename :
4059695
Link To Document :
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