Tailoring the Electronic Properties of Colloidal Quantum Dots in Metal-Semiconductor Nanocomposites for High Performance Photodetectors

被引：42

作者：

Pelayo Garcia de Arquer, F. ^{[1
]}

Lasanta, Tania ^{[1
]}

Bernechea, Maria ^{[1
]}

Konstantatos, Gerasimos ^{[1
]}

机构：

[1] ICFO Inst Ciencies Foton, Barcelona 08860, Spain

来源：

SMALL | 2015年 / 11卷 / 22期

关键词：

colloidal quantum dots; doping; photodetection; plasmonics; metal nanoparticles; nanocomposites; BULK NANO-HETEROJUNCTIONS; SOLAR-CELLS; PBSE;

D O I：

10.1002/smll.201403359

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Metallic nanoparticles tailor the electronic properties of PbS colloidal quantum dots in a post-synthetic, all solution-processable approach. The Fermi level of the resulting nanocomposites can be tuned from p- to n-type due to remote charge transfer and electron trap state passivation. This concurrently reduces dark current, improves time response, and increases sensitivity in PbS photoconductors, yielding an over-two-fold increase in detectivity. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：2636 / 2641

页数：6

共 34 条

[1]

Atwater HA, 2010, NAT MATER, V9, P205, DOI [10.1038/NMAT2629, 10.1038/nmat2629]

[2] High-performance crosslinked colloidal quantum-dot light-emitting diodes [J].

Cho, Kyung-Sang ;

Lee, Eun Kyung ;

Joo, Won-Jae ;

Jang, Eunjoo ;

Kim, Tae-Ho ;

Lee, Sang Jin ;

Kwon, Soon-Jae ;

Han, Jai Yong ;

Kim, Byung-Ki ;

Choi, Byoung Lyong ;

Kim, Jong Min .

NATURE PHOTONICS, 2009, 3 (06) :341-345

[3] Steric-Hindrance-Driven Shape Transition in PbS Quantum Dots: Understanding Size-Dependent Stability [J].

Choi, Hyekyoung ;

Ko, Jae-Hyeon ;

Kim, Yong-Hyun ;

Jeong, Sohee .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (14) :5278-5281

[4]

Chuang CHM, 2014, NAT MATER, V13, P796, DOI [10.1038/nmat3984, 10.1038/NMAT3984]

[5] Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles [J].

Debnath, Ratan ;

Tang, Jiang ;

Barkhouse, D. Aaron ;

Wang, Xihua ;

Pattantyus-Abraham, Andras G. ;

Brzozowski, Lukasz ;

Levina, Larissa ;

Sargent, Edward H. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (17) :5952-+

[6] Controlled Chemical Doping of Semiconductor Nanocrystals Using Redox Buffers [J].

Engel, Jesse H. ;

Surendranath, Yogesh ;

Alivisatos, A. Paul .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (32) :13200-13203

[7] Doping semiconductor nanocrystals [J].

Erwin, SC ;

Zu, LJ ;

Haftel, MI ;

Efros, AL ;

Kennedy, TA ;

Norris, DJ .

NATURE, 2005, 436 (7047) :91-94

[8] Plasmonic-Enhanced Organic Photovoltaics: Breaking the 10% Efficiency Barrier [J].

Gan, Qiaoqiang ;

Bartoli, Filbert J. ;

Kafafi, Zakya H. .

ADVANCED MATERIALS, 2013, 25 (17) :2385-2396

[9] Quantum Dot Size Dependent J-V Characteristics in Heterojunction ZnO/PbS Quantum Dot Solar Cells [J].

Gao, Jianbo ;

Luther, Joseph M. ;

Semonin, Octavi E. ;

Ellingson, Randy J. ;

Nozik, Arthur J. ;

Beard, Matthew C. .

NANO LETTERS, 2011, 11 (03) :1002-1008

[10]

Ip AH, 2012, NAT NANOTECHNOL, V7, P577, DOI [10.1038/nnano.2012.127, 10.1038/NNANO.2012.127]

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