Ultra-sensitive tandem colloidal quantum-dot photodetectors

Zhenyu Jiang; Wenjia Hu; Chen Mo; Yan Liu; Wenjun Zhang; Guanjun You; Li Wang; Mahmoud R.M. Atalla; Yu Zhang; Jie Liu; Kandhar K. Kurhade; Jian Xu

doi:10.1039/c5nr03791c

Ultra-sensitive tandem colloidal quantum-dot photodetectors

Zhenyu Jiang, Wenjia Hu, Chen Mo, Yan Liu, Wenjun Zhang, Guanjun You, Li Wang, Mahmoud R.M. Atalla, Yu Zhang, Jie Liu, Kandhar K. Kurhade, Jian Xu

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The solution-processed PbSe colloidal quantum-dot (CQD) infrared photodetector with tandem architecture is proposed to address the high dark current issue. The electrical transport mechanism in tandem has been fundamentally changed in which the recombination of carriers at an intermediate layer becomes dominant rather than carriers hopping between nearest neighbors in CQD materials. As a result, the tandem photodetector exhibits ultra-high detectivities of 4.7 × 10¹³ Jones and 8.1 × 10¹³ Jones under 34 μW cm^-2 illumination at 1100 nm, at 275 K and 100 K, respectively.

Original language	English (US)
Pages (from-to)	16195-16199
Number of pages	5
Journal	Nanoscale
Volume	7
Issue number	39
DOIs	https://doi.org/10.1039/c5nr03791c
State	Published - Oct 21 2015

All Science Journal Classification (ASJC) codes

General Materials Science

Access to Document

10.1039/c5nr03791c

Cite this

@article{9abe8ade3c5c4cb7bae3c8c2ab54ab7f,

title = "Ultra-sensitive tandem colloidal quantum-dot photodetectors",

abstract = "The solution-processed PbSe colloidal quantum-dot (CQD) infrared photodetector with tandem architecture is proposed to address the high dark current issue. The electrical transport mechanism in tandem has been fundamentally changed in which the recombination of carriers at an intermediate layer becomes dominant rather than carriers hopping between nearest neighbors in CQD materials. As a result, the tandem photodetector exhibits ultra-high detectivities of 4.7 × 1013 Jones and 8.1 × 1013 Jones under 34 μW cm-2 illumination at 1100 nm, at 275 K and 100 K, respectively.",

author = "Zhenyu Jiang and Wenjia Hu and Chen Mo and Yan Liu and Wenjun Zhang and Guanjun You and Li Wang and Atalla, {Mahmoud R.M.} and Yu Zhang and Jie Liu and Kurhade, {Kandhar K.} and Jian Xu",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2015",

month = oct,

day = "21",

doi = "10.1039/c5nr03791c",

language = "English (US)",

volume = "7",

pages = "16195--16199",

journal = "Nanoscale",

issn = "2040-3364",

publisher = "Royal Society of Chemistry",

number = "39",

}

TY - JOUR

T1 - Ultra-sensitive tandem colloidal quantum-dot photodetectors

AU - Jiang, Zhenyu

AU - Hu, Wenjia

AU - Mo, Chen

AU - Liu, Yan

AU - Zhang, Wenjun

AU - You, Guanjun

AU - Wang, Li

AU - Atalla, Mahmoud R.M.

AU - Zhang, Yu

AU - Liu, Jie

AU - Kurhade, Kandhar K.

AU - Xu, Jian

PY - 2015/10/21

Y1 - 2015/10/21

N2 - The solution-processed PbSe colloidal quantum-dot (CQD) infrared photodetector with tandem architecture is proposed to address the high dark current issue. The electrical transport mechanism in tandem has been fundamentally changed in which the recombination of carriers at an intermediate layer becomes dominant rather than carriers hopping between nearest neighbors in CQD materials. As a result, the tandem photodetector exhibits ultra-high detectivities of 4.7 × 1013 Jones and 8.1 × 1013 Jones under 34 μW cm-2 illumination at 1100 nm, at 275 K and 100 K, respectively.

AB - The solution-processed PbSe colloidal quantum-dot (CQD) infrared photodetector with tandem architecture is proposed to address the high dark current issue. The electrical transport mechanism in tandem has been fundamentally changed in which the recombination of carriers at an intermediate layer becomes dominant rather than carriers hopping between nearest neighbors in CQD materials. As a result, the tandem photodetector exhibits ultra-high detectivities of 4.7 × 1013 Jones and 8.1 × 1013 Jones under 34 μW cm-2 illumination at 1100 nm, at 275 K and 100 K, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84942944619&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84942944619&partnerID=8YFLogxK

U2 - 10.1039/c5nr03791c

DO - 10.1039/c5nr03791c

M3 - Article

C2 - 26388137

AN - SCOPUS:84942944619

SN - 2040-3364

VL - 7

SP - 16195

EP - 16199

JO - Nanoscale

JF - Nanoscale

IS - 39

ER -

Ultra-sensitive tandem colloidal quantum-dot photodetectors

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this