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CuInS2-Sensitized Quantum Dot Solar Cell. Electrophoretic Deposition, Excited-State Dynamics, and Photovoltaic Performance

Santra, Pralay K., Nair, Pratheesh V., George Thomas, K., Kamat, Prashant V.·2013·The Journal of Physical Chemistry Letters

Abstract

Ternary metal chalcogenides such as CuInS2 offer new opportunities to design quantum dot solar cells (QDSC). Chemically synthesized CuInS2 quantum dots (particle diameter, 2.6 nm) have been successfully deposited within the mesoscopic TiO2 film using electrophoretic deposition (150 V cm(-1) dc field). The primary photoinduced process of electron injection from excited CuInS2 into TiO2 occurs with a rate constant of 5.75 × 10(11) s(-1). The TiO2/CuInS2 films are photoactive and produce anodic photocurrent with a power conversion efficiency of 1.14%. Capping the TiO2/CuInS2 film with a CdS layer decreases the interfacial charge recombination and thus offers further improvement in the power conversion efficiency (3.91%). The synergy of using CdS as a passivation layer in the composite film is also evident from the increased external quantum efficiency of the electrode in the red region where only CuInS2 absorbs the incident light.

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Metadata

Authors
Santra, P. K., Nair, P. V., George Thomas, K., & Kamat, P. V.
Venue
The Journal of Physical Chemistry Letters
Published
2013-02-13
Volume
4
Issue
5
Pages
722-729
ISSN
1948-7185 (ISSN-L)
OpenAlex
W2315117632
Cited by
241
References
1
FWCI
14.31
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: CuInS2-Sensitized Quantum Dot Solar Cell. Electrophoretic Deposition, Excited-State Dynamics, and Photovoltaic Performance. https://app.cochat.ai/papers/10.1021/jz400181m
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Santra, P. K., Nair, P. V., George Thomas, K., & Kamat, P. V. (2013). CuInS2-Sensitized Quantum Dot Solar Cell. Electrophoretic Deposition, Excited-State Dynamics, and Photovoltaic Performance. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz400181m

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