Improving the photocurrent in quantum-dot-sensitized solar cells by employing alloy PbxCd1-xs quantum dots as photosensitizers

Chunze Yuan; Lin Li; Jing Huang; Zhijun Ning; Licheng Sun; Hans Ågren

doi:10.3390/nano6060097

Improving the photocurrent in quantum-dot-sensitized solar cells by employing alloy Pb_xCd₁_-xs quantum dots as photosensitizers

Chunze Yuan
, Lin Li
, Jing Huang
, Zhijun Ning
, Licheng Sun^*
, Hans Ågren

^*Corresponding author for this work

KTH Royal Institute of Technology

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

29 Scopus citations

Abstract

Ternary alloy Pb_xCd_1-xS quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy Pb_xCd_1-xS QDs (Pb_0.54Cd_0.46S, Pb_0.31Cd_0.69S, and Pb_0.24Cd_0.76S) were found to substantially improve the photocurrent of the solar cells compared to the single CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the photovoltage decreases when the ratio of Pb in Pb_xCd_1-xS is increased. Without surface protecting layer deposition, the highest short-circuit current density reaches 20 mA/cm² under simulated AM 1.5 illumination (100 mW/cm2). After an additional CdS coating layer was deposited onto the Pb_xCd_1-xS electrode, the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm² and an efficiency of 3.2%.

Original language	English
Article number	97
Journal	Nanomaterials
Volume	6
Issue number	6
DOIs	https://doi.org/10.3390/nano6060097
State	Published - 1 Jun 2016
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Alloy
PbS
Photocurrent
Quantum dot-sensitized solar cells

Access to Document

10.3390/nano6060097

Cite this

@article{23f5e23384ef4a4693972bdc38dc65b5,

title = "Improving the photocurrent in quantum-dot-sensitized solar cells by employing alloy PbxCd1-xs quantum dots as photosensitizers",

abstract = "Ternary alloy PbxCd1-xS quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy PbxCd1-xS QDs (Pb0.54Cd0.46S, Pb0.31Cd0.69S, and Pb0.24Cd0.76S) were found to substantially improve the photocurrent of the solar cells compared to the single CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the photovoltage decreases when the ratio of Pb in PbxCd1-xS is increased. Without surface protecting layer deposition, the highest short-circuit current density reaches 20 mA/cm2 under simulated AM 1.5 illumination (100 mW/cm2). After an additional CdS coating layer was deposited onto the PbxCd1-xS electrode, the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm2 and an efficiency of 3.2\%.",

keywords = "Alloy, PbS, Photocurrent, Quantum dot-sensitized solar cells",

author = "Chunze Yuan and Lin Li and Jing Huang and Zhijun Ning and Licheng Sun and Hans {\AA}gren",

note = "Publisher Copyright: {\textcopyright} 2016 by the authors; licensee MDPI, Basel, Switzerland.",

year = "2016",

month = jun,

day = "1",

doi = "10.3390/nano6060097",

language = "英语",

volume = "6",

journal = "Nanomaterials",

issn = "2079-4991",

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TY - JOUR

T1 - Improving the photocurrent in quantum-dot-sensitized solar cells by employing alloy PbxCd1-xs quantum dots as photosensitizers

AU - Yuan, Chunze

AU - Li, Lin

AU - Huang, Jing

AU - Ning, Zhijun

AU - Sun, Licheng

AU - Ågren, Hans

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Ternary alloy PbxCd1-xS quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy PbxCd1-xS QDs (Pb0.54Cd0.46S, Pb0.31Cd0.69S, and Pb0.24Cd0.76S) were found to substantially improve the photocurrent of the solar cells compared to the single CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the photovoltage decreases when the ratio of Pb in PbxCd1-xS is increased. Without surface protecting layer deposition, the highest short-circuit current density reaches 20 mA/cm2 under simulated AM 1.5 illumination (100 mW/cm2). After an additional CdS coating layer was deposited onto the PbxCd1-xS electrode, the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm2 and an efficiency of 3.2%.

AB - Ternary alloy PbxCd1-xS quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy PbxCd1-xS QDs (Pb0.54Cd0.46S, Pb0.31Cd0.69S, and Pb0.24Cd0.76S) were found to substantially improve the photocurrent of the solar cells compared to the single CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the photovoltage decreases when the ratio of Pb in PbxCd1-xS is increased. Without surface protecting layer deposition, the highest short-circuit current density reaches 20 mA/cm2 under simulated AM 1.5 illumination (100 mW/cm2). After an additional CdS coating layer was deposited onto the PbxCd1-xS electrode, the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm2 and an efficiency of 3.2%.

KW - Alloy

KW - PbS

KW - Photocurrent

KW - Quantum dot-sensitized solar cells

UR - https://www.scopus.com/pages/publications/84973909653

U2 - 10.3390/nano6060097

DO - 10.3390/nano6060097

M3 - 文章

AN - SCOPUS:84973909653

SN - 2079-4991

VL - 6

JO - Nanomaterials

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