TITLE:
Correlation between the Low-Temperature Photoluminescence Spectra and Photovoltaic Properties of Thin Polycrystalline CdTe Films
AUTHORS:
Bozorboy Joboralievich Akhmadaliev, Olmos Muhammaddovidovich Mamatov, Bakhtiyor Zaylobidinovich Polvonov, Nosirjon Khaydarovich Yuldashev
KEYWORDS:
Film Structures, Low-Temperature Photoluminescence, Crystalline Grains, Surface Potential Barriers, Anomalous Photovoltaic Properties, Thermal Treatment, Photocarriers, Intrinsic Luminescence Band, LO-Phonon Repetitions
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.4 No.2,
February
26,
2016
ABSTRACT: A dominant intrinsic luminescence band, which is due to the surface potential barriers of crystalline grains, and an edge doublet, which arises as an LO-phonon repetition of the e-h band, has been revealed in the low-temperature photoluminescence spectra of fine-grained obliquely deposited films. Doping film with In impurity leads to quenching of the doublet band, while further thermal treatment causes activation of the intrinsic band, the half-width and the blue shift of the red edge of which correlates with the maximum value of anomalously high photovoltage generated by the film.