Publication Type |
Journal Article |
School or College |
College of Engineering |
Department |
Materials Science & Engineering |
Creator |
Scarpulla, Michael |
Other Author |
Yu, K. M.; Walukiewicz, W.; Dubon, O. D.; Shan, W.; Wu, J.; Beeman, J. W.; Becla, P. |
Title |
Synthesis and properties of highly mismatched II-O-I alloys |
Date |
2004 |
Description |
Ternary and quaternary dilute II-VI oxides were synthesised using a highly nonequilibrium method: the combination of O ion implantation and pulsed-laser melting. CdOxTe12x thin films have been produced with x up to 0.015 and with the energy gap reduced by 0.15 eV. Optical transitions corresponding to both the lower (E-) and upper (E+) conduction sub-bands, resulting from the anticrossing interaction between the localised O states and the extended conduction states of the matrix, are clearly observed in quaternary Cd0.6Mn0.4OxTe1-x and Zn0.88Mn0.12OxTe1-x layers. These results have important implications for the existing theoretical models of the electronic structure of the highly mismatched alloys. In Zn1-xMnxTe, where the O level lies below the conduction band edge, it was demonstrated that incorporation of a small amount of oxygen leads to the formation of a narrow, oxygen-derived band of extended states located well below the conduction band edge of the ZnMnTe matrix. The three absorption edges of this material (~0.73, 1.83 and 2.56 eV) cover the entire solar spectrum providing a material envisioned for multiband, single-junction, high-efficiency photovoltaic devices. |
Type |
Text |
Publisher |
Institute of Electrical and Electronics Engineers (IEEE) |
Journal Title |
IEE Proceedings - Optoelectronics |
Volume |
151 |
Issue |
5 |
First Page |
452 |
Last Page |
459 |
DOI |
10.1049/ip-opt:20040932 |
citatation_issn |
13502433 |
Subject |
Highly mismatched alloys; Cadmium telluride; Zinc telluride; Anticrossing |
Subject LCSH |
Semiconductors -- Defects; Metals -- Defects; Thin films; Ion implantation; Semiconductor doping; Photovoltaic power generation |
Language |
eng |
Bibliographic Citation |
Yu, K. M., Walukiewicz, W., Scarpulla, M., Dubon, O. D., Shan, W., Wu, J., Beeman, J. W., & Becla, P. (2004). Synthesis and properties of highly mismatched II-O-VI alloys. IEEE Proceedings-Optoelectronics, 151(5), 452-9. |
Rights Management |
(c) 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. http://dx.doi.org/10.1049/ip-opt:20040932 |
Format Medium |
application/pdf |
Format Extent |
726,512 bytes |
Identifier |
ir-main,12269 |
ARK |
ark:/87278/s6m33ctk |
Setname |
ir_uspace |
ID |
702379 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6m33ctk |