The quantum efficiency of photo-charge generation in a-Se avalanche photodetectors

A. Reznik; B. J.M. Lui; Y. Ohkawa; T. Matsubara; K. Miyakawa; M. Kubota; K. Tanioka; T. Kawai; W. Zhao; J. A. Rowlands

doi:10.1016/j.nima.2006.05.116

The quantum efficiency of photo-charge generation in a-Se avalanche photodetectors

A. Reznik
, B. J.M. Lui
, Y. Ohkawa
, T. Matsubara
, K. Miyakawa
, M. Kubota
, K. Tanioka
, T. Kawai
, W. Zhao
, J. A. Rowlands

Radiology

Stony Brook University

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The quantum efficiency of photo-charge generation and avalanche multiplication in amorphous selenium (a-Se) photodetectors were measured over considerable ranges of photoexcitation wavelengths (420-600 nm) and electric fields (10-112.5 V/μm) for several different a-Se target thicknesses (8-35 μm). An avalanche multiplication factor of 1000 is shown for a 35 μm thick a-Se layer at an electric field of 98 V/μm. The experimental results on quantum efficiency can be explained by the Onsager theory of electron-hole pair dissociation in conjunction with an electric field-induced delocalization of states.

Original language	English
Pages (from-to)	93-95
Number of pages	3
Journal	Nuclear Inst. and Methods in Physics Research, A
Volume	567
Issue number	1 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nima.2006.05.116
State	Published - Nov 1 2006

Keywords

Avalanche a-Se
Delocalization of states
Onsager dissociation

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10.1016/j.nima.2006.05.116

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title = "The quantum efficiency of photo-charge generation in a-Se avalanche photodetectors",

abstract = "The quantum efficiency of photo-charge generation and avalanche multiplication in amorphous selenium (a-Se) photodetectors were measured over considerable ranges of photoexcitation wavelengths (420-600 nm) and electric fields (10-112.5 V/μm) for several different a-Se target thicknesses (8-35 μm). An avalanche multiplication factor of 1000 is shown for a 35 μm thick a-Se layer at an electric field of 98 V/μm. The experimental results on quantum efficiency can be explained by the Onsager theory of electron-hole pair dissociation in conjunction with an electric field-induced delocalization of states.",

keywords = "Avalanche a-Se, Delocalization of states, Onsager dissociation",

author = "A. Reznik and Lui, \{B. J.M.\} and Y. Ohkawa and T. Matsubara and K. Miyakawa and M. Kubota and K. Tanioka and T. Kawai and W. Zhao and Rowlands, \{J. A.\}",

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doi = "10.1016/j.nima.2006.05.116",

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TY - JOUR

T1 - The quantum efficiency of photo-charge generation in a-Se avalanche photodetectors

AU - Reznik, A.

AU - Lui, B. J.M.

AU - Ohkawa, Y.

AU - Matsubara, T.

AU - Miyakawa, K.

AU - Kubota, M.

AU - Tanioka, K.

AU - Kawai, T.

AU - Zhao, W.

AU - Rowlands, J. A.

PY - 2006/11/1

Y1 - 2006/11/1

N2 - The quantum efficiency of photo-charge generation and avalanche multiplication in amorphous selenium (a-Se) photodetectors were measured over considerable ranges of photoexcitation wavelengths (420-600 nm) and electric fields (10-112.5 V/μm) for several different a-Se target thicknesses (8-35 μm). An avalanche multiplication factor of 1000 is shown for a 35 μm thick a-Se layer at an electric field of 98 V/μm. The experimental results on quantum efficiency can be explained by the Onsager theory of electron-hole pair dissociation in conjunction with an electric field-induced delocalization of states.

AB - The quantum efficiency of photo-charge generation and avalanche multiplication in amorphous selenium (a-Se) photodetectors were measured over considerable ranges of photoexcitation wavelengths (420-600 nm) and electric fields (10-112.5 V/μm) for several different a-Se target thicknesses (8-35 μm). An avalanche multiplication factor of 1000 is shown for a 35 μm thick a-Se layer at an electric field of 98 V/μm. The experimental results on quantum efficiency can be explained by the Onsager theory of electron-hole pair dissociation in conjunction with an electric field-induced delocalization of states.

KW - Avalanche a-Se

KW - Delocalization of states

KW - Onsager dissociation

UR - https://www.scopus.com/pages/publications/33749329719

U2 - 10.1016/j.nima.2006.05.116

DO - 10.1016/j.nima.2006.05.116

M3 - Article

SN - 0168-9002

VL - 567

SP - 93

EP - 95

JO - Nuclear Inst. and Methods in Physics Research, A

JF - Nuclear Inst. and Methods in Physics Research, A

IS - 1 SPEC. ISS.

ER -

The quantum efficiency of photo-charge generation in a-Se avalanche photodetectors

Abstract

Keywords

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