Synthesis of near-infrared silver-indium-sulfide (AgInS2) quantum dots as heavy-metal free photosensitizer for solar cell applications

Kai Chun Cheng; Wing Cheung Law; Ken Tye Yong; Jeremy S. Nevins; David F. Watson; Ho Pui Ho; Paras N. Prasad

doi:10.1016/j.cplett.2011.09.027

Synthesis of near-infrared silver-indium-sulfide (AgInS2) quantum dots as heavy-metal free photosensitizer for solar cell applications

Kai Chun Cheng, Wing Cheung Law, Ken Tye Yong, Jeremy S. Nevins, David F. Watson, Ho Pui Ho, Paras N. Prasad

Research output: Journal article publication › Journal article › Academic research › peer-review

55 Citations (Scopus)

Abstract

We report the use of silver-indium-sulfide (AgInS2) quantum dots (QDs) as heavy metal-free photosensitizer for QDs-sensitized solar cell. For fabricating the TiO2/AgInS2electrode, the QDs were attached to a mesoporous TiO2surface by using bifunctional linker molecules. The fabricated TiO2/AgInS2electrode exhibits light absorption in the visible region and serves as the photoanode. Upon bandgap excitation, injection of photoexcited electrons from AgInS2QDs into the TiO2matrix produces photocurrents accordingly. The proof-of-concept AgInS2QDs-sensitized solar cell exhibits a short-circuit current of 0.49 mA/cm2 and open-circuit voltage of 0.24 V, under one sun illumination.

Original language	English
Pages (from-to)	254-257
Number of pages	4
Journal	Chemical Physics Letters
Volume	515
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2011.09.027
Publication status	Published - 27 Oct 2011
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
General Physics and Astronomy

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10.1016/j.cplett.2011.09.027

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title = "Synthesis of near-infrared silver-indium-sulfide (AgInS2) quantum dots as heavy-metal free photosensitizer for solar cell applications",

abstract = "We report the use of silver-indium-sulfide (AgInS2) quantum dots (QDs) as heavy metal-free photosensitizer for QDs-sensitized solar cell. For fabricating the TiO2/AgInS2electrode, the QDs were attached to a mesoporous TiO2surface by using bifunctional linker molecules. The fabricated TiO2/AgInS2electrode exhibits light absorption in the visible region and serves as the photoanode. Upon bandgap excitation, injection of photoexcited electrons from AgInS2QDs into the TiO2matrix produces photocurrents accordingly. The proof-of-concept AgInS2QDs-sensitized solar cell exhibits a short-circuit current of 0.49 mA/cm2 and open-circuit voltage of 0.24 V, under one sun illumination.",

author = "Cheng, {Kai Chun} and Law, {Wing Cheung} and Yong, {Ken Tye} and Nevins, {Jeremy S.} and Watson, {David F.} and Ho, {Ho Pui} and Prasad, {Paras N.}",

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AU - Cheng, Kai Chun

AU - Law, Wing Cheung

AU - Yong, Ken Tye

AU - Nevins, Jeremy S.

AU - Watson, David F.

AU - Ho, Ho Pui

AU - Prasad, Paras N.

PY - 2011/10/27

Y1 - 2011/10/27

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AB - We report the use of silver-indium-sulfide (AgInS2) quantum dots (QDs) as heavy metal-free photosensitizer for QDs-sensitized solar cell. For fabricating the TiO2/AgInS2electrode, the QDs were attached to a mesoporous TiO2surface by using bifunctional linker molecules. The fabricated TiO2/AgInS2electrode exhibits light absorption in the visible region and serves as the photoanode. Upon bandgap excitation, injection of photoexcited electrons from AgInS2QDs into the TiO2matrix produces photocurrents accordingly. The proof-of-concept AgInS2QDs-sensitized solar cell exhibits a short-circuit current of 0.49 mA/cm2 and open-circuit voltage of 0.24 V, under one sun illumination.

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Synthesis of near-infrared silver-indium-sulfide (AgInS2) quantum dots as heavy-metal free photosensitizer for solar cell applications

Abstract

ASJC Scopus subject areas

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