Search & Display Options
Search within Results:
Field:
author
title
year
keywords
abstract
type
publication
abbrev_journal
volume
issue
pages
thesis
publisher
place
editor
series_title
language
area
notes
call_number
serial
contains:
...
Exclude matches
Display Options:
Field:
all fields
keywords & abstract
additional fields
records per page
Select All
Deselect All
<<
1
>>
List View
|
Citations
|
Details
Record
Links
Author
Mitin, Vladimir
;
Antipov, Andrei
;
Sergeev, Andrei
;
Vagidov, Nizami
;
Eason, David
;
Strasser, Gottfried
Title
Quantum Dot Infrared Photodetectors: Photoresponse Enhancement Due to Potential Barriers
Type
Journal Article
Year
2011
Publication
Nanoscale Research Letters
Abbreviated Journal
Nanoscale res lett
Volume
6
Issue
1
Pages
6
Keywords
Quantum dots
;
Infrared detectors
;
Photoresponse
;
Doping
;
Potential barriers
;
Capture processes
Abstract
Potential barriers around quantum dots (QDs) play a key role in kinetics of photoelectrons. These barriers are always created, when electrons from dopants outside QDs fill the dots. Potential barriers suppress the capture processes of photoelectrons and increase the photoresponse. To directly investigate the effect of potential barriers on photoelectron kinetics, we fabricated several QD structures with different positions of dopants and various levels of doping. The potential barriers as a function of doping and dopant positions have been determined using nextnano3 software. We experimentally investigated the photoresponse to IR radiation as a function of the radiation frequency and voltage bias. We also measured the dark current in these QD structures. Our investigations show that the photoresponse increases ~30 times as the height of potential barriers changes from 30 to 130 meV.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
Approved
no
Call Number
RPLAB @ gujma @
Serial
712
Permanent link to this record
Select All
Deselect All
<<
1
>>
List View
|
Citations
|
Details