Title: Growth and morphology of lead tin selenide for MWIR detectors
Abstract: A great deal of research has been performed on developing room temperature mid wave infrared (MWIR) and long wave infrared (LWIR) detectors to replace very costly mercury cadmium telluride based detectors. Among the more studied materials for high operating temperature detectors, PbSe and PbSe-type heavy metal selenides have been grown in the bulk, thin film and nano crystal morphologies. To better understand the effects of the substrate on the properties of these thin films, we have deposited lead selenide by physical vapor transport (PVT) method on highresistivity Si substrates and studied the characteristics of the film. Growth on silicon and glass substrates showed different morphologies compared to pure lead selenide material. It was seen that materials grown on a glass substrate possessed different morphology after annealing. FTIR was used to calculate bandgap information comparison with undoped PbSe. We will describe the details of the growth method, effect of substrate on nucleation and morphology of the pure and lead selenide material and band gap comparisons between substrates.
Publication Year: 2015
Publication Date: 2015-05-13
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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