CdS-CdTe anisotropic nanocomposites as photovoltaic substance
✍ Scribed by Naohiko Kato; Tomoyosi Motohiro; Tatsumi Hioki; Shoji Noda
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 822 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0927-0248
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✦ Synopsis
Anomalous photovoltaic effects in nanometre-scale composites formed by simultaneous oblique sputter deposition of CdTe and CdS from different directions have been studied. The resultant thin film shows an anomalous photovoltage as high as 150 V/cm along the substrate plane which is parallel to a straight line linked between CdS and CdTe targets under 720 W/m 2 AM-2 irradiation. This film has a composition distribution along the substrate plane. The consistent relation between photovoltaic properties and film composition has been observed, that is, as the ratio of CdS component in the film increases, the film resistance decreases. The response speed of photovoltages is faster than that of single-phase CdTe film. It has been found that the CdS-CdTe composites films formed by the above method are photoconductive and a dominant factor of photoconduction is due to the CdS component in the composites.