碩士 / 南台科技大學 / 光電工程系 / 101 / This work is focused on hydrogen production of CIGS films grown by sputtering one single target containing Cu, In, Ga, and Se elements. The as-grown films comprise CIGS crystals; however, the CIGS crystallinity needs to be enhanced. We thus perform two different processes including thermal and laser annealing in order to improve CIGS crystallinity.
Crystallinity and conductivity of sputtered CIGS films could by enhanced by thermal annealing. After annealing at 3500C for 30 min, the crystallinity of CIGS film deposited by 50W DC gun power is significantly enhanced. The FWHM of XRD signal corresponding to CIGS(112) orientation is 0.48°, and the film resistivity is 4.31*10-01Ω-cm. This film produces gas in water with a rate of ~79.94 μmol/hour-cm2. The gas comprises 52.2 vol.% H2 and 47.8 vol.% O2. In methanol aqueous solution (with a volume ratio of MeOH:H2O = 1:9), the gas production rate of this CIGS film is around 149.36 μmol/hour-cm2 and the gas contains 68.9 vol.% H2 and 31.1 vol.% O2. Laser annealing is also a feasible process for enhancement of CIGS crystallinity. After annealing by 0.2W laser power for 50 pulses, the crystallinity of CIGS film deposited with 100W DC gun power is improved. The FWHM of XRD signal corresponding to CIGS(112) orientation is 1.13°, and the film resistivity is 1.98*10-01Ω-cm. This film produces gas in water with a rate of ~51.64 μmol/hour-cm2. The gas comprises 54.9 vol.% H2 and 45.1 vol.% O2. In methanol aqueous solution, the gas production rate of this CIGS film is around 122.12 μmol/hour-cm2 and the gas contains 67.4 vol.% H2 and 32.6 vol.% O2. Our results suggest that CIGS films, deposited by sputtering one single target containing Cu, In, Ga, and Se, are promising for hydrogen production. The hydrogen production rate is related to the CIGS crystallinity.
| Identifer | oai:union.ndltd.org:TW/101STUT8124004 |
| Date | January 1900 |
| Creators | Li,Jian-Ying, 李建瑩 |
| Contributors | Kao ,Chih-Cheng, 高至誠 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 57 |
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