14-17 September 2021
America/Los_Angeles timezone

Role of a-Se device configuration in UV detection efficiency characterized by Time of Flight

15 Sep 2021, 09:00
Poster Light/charge readout (PMT, SiPM, WLS, electronics etc.) Poster in Gather.Town


Kaitlin Hellier (University of California, Santa Cruz)


Amorphous selenium (a-Se) detectors have made significant advances in the last few decades, with applications in X-ray, UV, and visible light detection and potential for high energy particle detection. A vertical architecture, in which light passes through a transparent conductor to the a-Se layer, is common in commercial devices; however, a lateral structure, in which light passes only through the selenium positioned between two contacts, presents an opportunity for improved device performance and application. In this work we compare the performance of vertical devices with a-Se thicknesses of 5, 10, and 15 um and lateral devices with electrode spacing of the same distances, using time of flight (TOF) and conversion efficiency, and introduce optical slits for lateral structures as a way to better perform carrier specific TOF in a-Se devices.

Primary author

Kaitlin Hellier (University of California, Santa Cruz)


Ms Emmie Benard (Arizona State University, University of California, Santa Cruz) Shiva Abbaszadeh (University of California, Santa Cruz)

Presentation Materials

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