Recent developments of amorphous selenium-based X-ray detectors: a review

H Huang, S Abbaszadeh - IEEE Sensors Journal, 2019 - ieeexplore.ieee.org
Amorphous selenium (a-Se) is a photoconductive material that has been intensively
investigated from its early application in xerography to its present application in flat panel X …

Development of an amorphous selenium-based photodetector driven by a diamond cold cathode

T Masuzawa, I Saito, T Yamada, M Onishi… - Sensors, 2013 - mdpi.com
Amorphous-selenium (a-Se) based photodetectors are promising candidates for imaging
devices, due to their high spatial resolution and response speed, as well as extremely high …

Dark current in multilayer stabilized amorphous selenium based photoconductive x-ray detectors

JB Frey, G Belev, O Tousignant, H Mani… - Journal of Applied …, 2012 - pubs.aip.org
We report on experimental results which show that the dark current in nip structured,
amorphous selenium films is independent of i-layer thickness in samples with consistently …

Charge transport in pure and stabilized amorphous selenium: re-examination of the density of states distribution in the mobility gap and the role of defects

S Kasap, C Koughia, J Berashevich… - Journal of Materials …, 2015 - Springer
We re-examine electron and hole transport in pure and stabilized amorphous selenium (a-
Se) and attempt to construct a DOS distribution in the mobility gap below E c and above E v …

Measurement of UV from a microplasma by a microfabricated amorphous selenium detector

S Abbaszadeh, KS Karim… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
We spectrally demonstrate for the first time that an amorphous selenium metal-
semiconductor-metal detector can be used for the measurement of ultraviolet photons (200 …

Columnar recombination for X-ray generated electron-holes in amorphous selenium and its significance in a-Se x-ray detectors

O Bubon, K Jandieri, SD Baranovskii… - Journal of applied …, 2016 - pubs.aip.org
Although amorphous selenium (a-Se) has a long and successful history of application in
optical and X-ray imaging, some of its fundamental properties are still puzzling. In …

Dark current mechanisms in amorphous selenium-based photoconductive detectors: an overview and re-examination

MZ Kabir - Journal of Materials Science: Materials in Electronics, 2015 - Springer
The transient and steady-state dark current behaviors in various amorphous selenium (a-Se)
detectors are analyzed by developing mathematical models considering all possible …

Conditions for a carrier multiplication in amorphous-selenium based photodetector

T Masuzawa, S Kuniyoshi, M Onishi, R Kato… - Applied Physics …, 2013 - pubs.aip.org
Amorphous selenium is a promising candidate for high sensitivity photodetector due to its
unique carrier multiplication phenomenon. More than 10 carriers can be generated per …

Electron–hole pair creation energy in amorphous selenium: Geminate versus columnar recombination

MZ Kabir, SM Arnab, N Hijazi - Journal of Materials Science: Materials in …, 2019 - Springer
Amorphous selenium (a-Se) is one of the most successful photoconductors for direct-
conversion X-ray detectors. However, the initial carrier recombination is believed to be …

Effects of x-ray irradiation on charge transport and charge collection efficiency in stabilized a-Se photoconductors

SO Kasap, J Yang, B Simonson, E Adeagbo… - Journal of Applied …, 2020 - pubs.aip.org
Stabilized amorphous selenium (a-Se) photoconductive layers are currently used in the
majority of modern digital x-ray flat panel imaging detectors in mammography. We examine …