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Copper zinc tin sulfur (CZTS) thin films have been extensively studied in recent years for their advantages of low cost, high absorption coefficient (>= 10(4) cm(-1)), appropriate band gap (similar to 1.5 eV), and nontoxicity. CZTS thin films are promising materials of solar cells like copper indium gallium selenide (CIGS). In this work, CZTS thin films were prepared on glass substrates by vacuum evaporation and sulfurization method. Sn/Cu/ZnS (CZT) precursors were deposited by thermal evaporation and then sulfurized in N-2 + H2S atmosphere at temperatures of 360-560 degrees C to produce polycrystalline CZTS thin films. It is found that there are some impurity phases in the thin films with the sulfurization temperature less than 500 degrees C, and the crystallite size of CZTS is quite small. With the further increase of the sulfurization temperature, the obtained thin films exhibit preferred (112) orientation with larger crystallite size and higher density. When the sulfurization temperature is 500 degrees C, the band gap energy, resistivity, carrier concentration, and mobility of the CZTS thin films are 1.49 eV, 9.37 Omega . cm, 1.714 x 10(17) cm(-3), and 3.89cm(2)/(V . s), respectively. Therefore, the prepared CZTS thin films are suitable for absorbers of solar cells.
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INTERNATIONAL JOURNAL OF PHOTOENERGY
ISSN: 1110-662X
Year: 2013
Volume: 2013
2 . 1 0 0
JCR@2023
ESI Discipline: PHYSICS;
Cited Count:
WoS CC Cited Count: 68
SCOPUS Cited Count: 21
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
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