Affiliation:
1. Institut Teknologi Sepuluh Nopember (ITS)
Abstract
A p-type thin film of hydrogenated amporphous silicon (a-Si:H) has successfully been fabricated by radio frequency-plasma enhanced chemical vapor deposition (RF-PECVD) technique. Substrate used in the deposition process is indium tin oxide (ITO) layer coated having size of 10 x10 cm2 and being cleaned with 97% alcohol using ultrasonic bath. According to Atomic Force Microscope (AFM) observation, the layer thickness of p-type a-Si: H film was 150 nm. The Transmission spectrum at room temperature obtained from UV-Vis measurement demonstrates a large period modulation, which is due to the interference within the film. At wavelength longer than 1000 nm (or energy <1 eV), the interference modulation in the transmission spectrum of the film is seen to broaden. It is shown in a zoomed - scale around the related band gap area that one may find an exciton structure.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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