Local polarization phenomena in In-doped CdTe X-ray detector arrays

Autor:	T. Sato, K. Sato, S. Ishida, M. Yamada, M. Kiri, M. Hirooka, Hitoshi Kanamori
Rok vydání:	1995
Předmět:	Nuclear and High Energy Physics Materials science Photoluminescence Dopant business.industry Detector Doping X-ray detector Polarization (waves) Fluence Condensed Matter::Materials Science Nuclear Energy and Engineering Electric field Optoelectronics Electrical and Electronic Engineering business
Zdroj:	IEEE Transactions on Nuclear Science. 42:1513-1518
ISSN:	1558-1578 0018-9499
Popis:	Local polarization phenomena have been studied in detector arrays with the detector element size of 500 /spl mu/m/spl times/500 /spl mu/m, which are fabricated from high-resistivity In-doped CdTe crystals grown by the vertical Bridgman technique. It has been found for the first time that a polarization effect, which is characterized by a progressive decrease of the pulse counting rate with increasing photon fluence, strongly depends on the detector elements, that is, the portion of crystals used. The influence of several parameters, such as the applied electric field strength, time, and temperature, on this local polarization effect is also investigated. From the photoluminescence measurements of the inhomogeneity of In dopant, it is concluded that the local polarization effect observed here originates from an deep level associated with In dopant in CdTe crystals. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e841565fc4de0becebfcb7c44370ef1c https://doi.org/10.1109/23.467949 Zobrazit plný text záznamu