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- Title
Photoconductivity kinetics of indium sulfofluoride thin films.
- Authors
Kleider, Jean-Paul; Johnson, Erik; Brüggemann, Rudolf; Vygranenko, Yuri; Fernandes, Miguel; Vieira, Manuela; Lavareda, Guilherme; Nunes de Carvalho, Carlos; Brogueira, Pedro; Amaral, Ana
- Abstract
Indium sulfofluoride is an amorphous wide-gap semiconductor exhibiting high sensitivity to UV radiation. This work reports on the kinetics of photoconductivity in indium sulfofluoride thin films along with their electrical and optical properties. The films were deposited by radio-frequency plasma-enhanced reactive thermal evaporation. The film characterization includes electrical, optical, and photoconductivity measurements. The films are highly transparent in the visible-infrared range due to an indirect bandgap of 2.8 eV. The spectral response measurements have revealed existence of the band tail states. The synthesized compound is highly resistive (∼200 MΩ-cm at 300 K) and exhibits extremely slow photocurrent relaxations. Photoconductivity kinetics was studied under various excitation conditions. A dependence of the photocurrent on the incident photon flux was also determined.
- Subjects
PHOTOCONDUCTIVITY; THIN films; INDIUM; AMORPHOUS semiconductors; SPECTRAL sensitivity; THERMAL plasmas; PHOTOELECTROCHEMISTRY
- Publication
European Physical Journal - Applied Physics, 2020, Vol 88, Issue 4, p1
- ISSN
1286-0042
- Publication type
Article
- DOI
10.1051/epjap/2020190265