Advanced Materials, volume 24, issue 46, pages 6181-6185
N-Type Colloidal-Quantum-Dot Solids for Photovoltaics
David Zhitomirsky
1
,
Melissa Furukawa
1
,
Jiang Hong Tang
2
,
Philipp Stadler
1
,
Sjoerd Hoogland
1
,
Oleksandr Voznyy
1
,
Huan Liu
3
,
Edward H Sargent
1
Publication type: Journal Article
Publication date: 2012-09-12
Journal:
Advanced Materials
scimago Q1
SJR: 9.191
CiteScore: 43.0
Impact factor: 27.4
ISSN: 09359648, 15214095
PubMed ID:
22968808
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
N-type PbS colloidal-quantum-dot (CQD) films are fabricated using a controlled halide chemical treatment, applied in an inert processing ambient environment. The new materials exhibit a mobility of 0.1 cm2 V−1 s−1. The halogen ions serve both as a passivating agent and n-dope the films via substitution at surface chalcogen sites. The majority electron concentration across the range 1016 to 1018 cm−3 is varied systematically.
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