Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Analysis of surface dark current dependent upon surface passivation in APD based on GaAs

Authors
Song, Hong JooRoh, Cheong HyunLee, Jun HoChoi, Hong GooKim, Dong HoPark, Jung HoHahn, Cheol-Koo
Issue Date
Jun-2009
Publisher
IOP PUBLISHING LTD
Citation
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, v.24, no.6
Indexed
SCIE
SCOPUS
Journal Title
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
Volume
24
Number
6
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119860
DOI
10.1088/0268-1242/24/6/065003
ISSN
0268-1242
Abstract
In this paper, we investigated the dependence of reverse dark current on two types of surface passivation, one of which is polyimide and the other is SiNx, for InAs quantum dots/GaAs separate absorption, charge, multiplication avalanche photodiode (SACM APD). From the experimental results, we found that dark current was dominated by surface current, and not bulk current. It was also noted that SiNx passivation has a surface current that is lower by three to nine times in magnitude than that in polyimide passivation in the whole range of bias. To analyze the difference in dark current due to the passivation types, we propose the theoretical current components. This shows that the dark current of both passivation types is mainly composed of generation-recombination (G-R) and tunneling components, originating from the surface. However, each component has a different magnitude for passivation types, which can be explained by carrier concentration and trap density. The dependence of dark current on temperature shows the different behaviors between passivation types and supports a theoretical description of current components.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > School of Electrical Engineering > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Altmetrics

Total Views & Downloads

BROWSE