Colloidal quantum dots based infrared photodiodes

Jian Xu; Dehu Cui; Shengyong Xu; Gary Paradee; Michael Gerhold

doi:10.1149/1.2209390

Colloidal quantum dots based infrared photodiodes

Jian Xu
, Dehu Cui
, Shengyong Xu
, Gary Paradee
, Michael Gerhold

Engineering Science and Mechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We report in this paper our studies on the photoconductivity and photovoltaic effects of colloidal PbSe nanocrystal quantum dots (NQDs) which were embedded in conductive polymer matrices to form hybrid polymer/NQD infrared photodiodes. The generation of photocarriers in PbSe NQDs and their transport in NQD-polymer composites were described by a simplified band diagram picture of the device. Both photocurrent and photovoltage outputs were measured from the NQD-incorporated photodiode upon the illumination of near-infrared (NIR) light, whereas the net polymer-based devices do not exhibit any photoresponsivity. The intensity dependence of the photocurrent indicates the pseudomonomolecular recombination kinetics in the NQD-polymer composite. The measured photocurrent spectrum is consistent with the absorption characteristic of PbSe NQDs, Further enhancement of the photodiode efficiency can be achieved by engineering the nanocrystal surface to reduce the potential barriers due to the ligant capping molecules. copyright The Electrochemical Society.

Original language	English (US)
Title of host publication	Photovoltaics for the 21st Century III
Publisher	Electrochemical Society Inc.
Pages	17-31
Number of pages	15
Edition	33
ISBN (Electronic)	9781566774888
DOIs	https://doi.org/10.1149/1.2209390
State	Published - 2006
Event	Photoboltaics for the 21st Century III - 208th Electrochemical Society Meeting - Los Angeles, CA, United States Duration: Oct 16 2005 → Oct 21 2005

Publication series

Name	ECS Transactions
Number	33
Volume	1
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	Photoboltaics for the 21st Century III - 208th Electrochemical Society Meeting
Country/Territory	United States
City	Los Angeles, CA
Period	10/16/05 → 10/21/05

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

General Engineering

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10.1149/1.2209390

Cite this

@inproceedings{11e5ea867e13433080544ea3d45f77de,

title = "Colloidal quantum dots based infrared photodiodes",

abstract = "We report in this paper our studies on the photoconductivity and photovoltaic effects of colloidal PbSe nanocrystal quantum dots (NQDs) which were embedded in conductive polymer matrices to form hybrid polymer/NQD infrared photodiodes. The generation of photocarriers in PbSe NQDs and their transport in NQD-polymer composites were described by a simplified band diagram picture of the device. Both photocurrent and photovoltage outputs were measured from the NQD-incorporated photodiode upon the illumination of near-infrared (NIR) light, whereas the net polymer-based devices do not exhibit any photoresponsivity. The intensity dependence of the photocurrent indicates the pseudomonomolecular recombination kinetics in the NQD-polymer composite. The measured photocurrent spectrum is consistent with the absorption characteristic of PbSe NQDs, Further enhancement of the photodiode efficiency can be achieved by engineering the nanocrystal surface to reduce the potential barriers due to the ligant capping molecules. copyright The Electrochemical Society.",

author = "Jian Xu and Dehu Cui and Shengyong Xu and Gary Paradee and Michael Gerhold",

note = "Funding Information: HELIOS research grant No. HRC-ID 061939. Funding Information: This study was supported by a HELIOS research grant (HRC-ID 061939). Helios GmbH was not involved in study design, data collection or interpretation, or publication of this study. This study was an investigator-initiated trial.; Photoboltaics for the 21st Century III - 208th Electrochemical Society Meeting ; Conference date: 16-10-2005 Through 21-10-2005",

year = "2006",

doi = "10.1149/1.2209390",

language = "English (US)",

series = "ECS Transactions",

publisher = "Electrochemical Society Inc.",

number = "33",

pages = "17--31",

booktitle = "Photovoltaics for the 21st Century III",

edition = "33",

}

Xu, J, Cui, D, Xu, S, Paradee, G & Gerhold, M 2006, Colloidal quantum dots based infrared photodiodes. in Photovoltaics for the 21st Century III. 33 edn, ECS Transactions, no. 33, vol. 1, Electrochemical Society Inc., pp. 17-31, Photoboltaics for the 21st Century III - 208th Electrochemical Society Meeting, Los Angeles, CA, United States, 10/16/05. https://doi.org/10.1149/1.2209390

TY - GEN

T1 - Colloidal quantum dots based infrared photodiodes

AU - Xu, Jian

AU - Cui, Dehu

AU - Xu, Shengyong

AU - Paradee, Gary

AU - Gerhold, Michael

N1 - Funding Information: HELIOS research grant No. HRC-ID 061939. Funding Information: This study was supported by a HELIOS research grant (HRC-ID 061939). Helios GmbH was not involved in study design, data collection or interpretation, or publication of this study. This study was an investigator-initiated trial.

PY - 2006

Y1 - 2006

N2 - We report in this paper our studies on the photoconductivity and photovoltaic effects of colloidal PbSe nanocrystal quantum dots (NQDs) which were embedded in conductive polymer matrices to form hybrid polymer/NQD infrared photodiodes. The generation of photocarriers in PbSe NQDs and their transport in NQD-polymer composites were described by a simplified band diagram picture of the device. Both photocurrent and photovoltage outputs were measured from the NQD-incorporated photodiode upon the illumination of near-infrared (NIR) light, whereas the net polymer-based devices do not exhibit any photoresponsivity. The intensity dependence of the photocurrent indicates the pseudomonomolecular recombination kinetics in the NQD-polymer composite. The measured photocurrent spectrum is consistent with the absorption characteristic of PbSe NQDs, Further enhancement of the photodiode efficiency can be achieved by engineering the nanocrystal surface to reduce the potential barriers due to the ligant capping molecules. copyright The Electrochemical Society.

AB - We report in this paper our studies on the photoconductivity and photovoltaic effects of colloidal PbSe nanocrystal quantum dots (NQDs) which were embedded in conductive polymer matrices to form hybrid polymer/NQD infrared photodiodes. The generation of photocarriers in PbSe NQDs and their transport in NQD-polymer composites were described by a simplified band diagram picture of the device. Both photocurrent and photovoltage outputs were measured from the NQD-incorporated photodiode upon the illumination of near-infrared (NIR) light, whereas the net polymer-based devices do not exhibit any photoresponsivity. The intensity dependence of the photocurrent indicates the pseudomonomolecular recombination kinetics in the NQD-polymer composite. The measured photocurrent spectrum is consistent with the absorption characteristic of PbSe NQDs, Further enhancement of the photodiode efficiency can be achieved by engineering the nanocrystal surface to reduce the potential barriers due to the ligant capping molecules. copyright The Electrochemical Society.

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UR - https://www.scopus.com/pages/publications/33846818637#tab=citedBy

U2 - 10.1149/1.2209390

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M3 - Conference contribution

AN - SCOPUS:33846818637

T3 - ECS Transactions

SP - 17

EP - 31

BT - Photovoltaics for the 21st Century III

PB - Electrochemical Society Inc.

T2 - Photoboltaics for the 21st Century III - 208th Electrochemical Society Meeting

Y2 - 16 October 2005 through 21 October 2005

ER -

Colloidal quantum dots based infrared photodiodes

Abstract

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