Microstructure Related Characterization of a-Si:H Thin Films PECVD Deposited under Varied Hydrogen Dilution
Autor: | Vavruňková, Veronika, Müllerová, Jarmila, Šutta, Pavel |
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Jazyk: | angličtina |
Rok vydání: | 2007 |
Předmět: | |
Zdroj: | Advances in Electrical and Electronic Engineering, Vol 6, Iss 3, Pp 108-111 (2007) |
ISSN: | 1804-3119 1336-1376 |
Popis: | We report on the structure and optical properties of hydrogenated silicon thin films deposited by plasma - enhanced chemical vapor deposition (PECVD) from silane diluted with hydrogen in a wide dilution range. The samples deposited with dilutions below 30 were detected as amorphous hydrogenated silicon (a-Si:H) with crystalline grains of several nanometers in size which represent the medium-range order of a-Si:H. The optical characterization confirmed increasing ordering with the increasing dilution. The optical band gap was observed to be increasing function of the dilution. |
Databáze: | OpenAIRE |
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