Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells

Hee Je Kim; Dong Jo Kim; S. Srinivasa Rao; A. Dennyson Savariraj; Soo Kyoung Kim; Min Kyu Son; Chandu V.V.M. Gopi; K. Prabakar

doi:10.1016/j.electacta.2014.02.019

Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells

Hee Je Kim, Dong Jo Kim, S. Srinivasa Rao, A. Dennyson Savariraj, Soo Kyoung Kim, Min Kyu Son, Chandu V.V.M. Gopi, K. Prabakar

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

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Abstract

Facile and nano-rice structured nickel sulfide (NiS) thin films were synthesized and utilized as counter electrode (CE) in quantum dot sensitized solar cells (QDSSCs) for polysulfide redox reactions. NiS thin films deposited on fluorine-doped tin oxide substrate results in formation of highly efficient CE for liquid-junction QDSSCs. Under illumination of 1 sun (100 mW cm ^-2), the QDSSC based NiS CE exhibited power conversion efficiency (η) of 2.97%, which is higher than platinum (1.45%) CE. Electrochemical impedance spectroscopy affirms that high value of η in NiS CE is due to the elevated electro-catalytic activity towards polysulfide electrolyte reduction and also due to the scale-down in the charge transfer resistance (3.16 Ω) at the CE-electrolyte interface.

Original language	English
Pages (from-to)	427-432
Number of pages	6
Journal	Electrochimica Acta
Volume	127
DOIs	https://doi.org/10.1016/j.electacta.2014.02.019
Publication status	Published - May 1 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2014.02.019

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@article{c3e85553f0c74ad3b7441e77ccd04231,

title = "Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells",

abstract = "Facile and nano-rice structured nickel sulfide (NiS) thin films were synthesized and utilized as counter electrode (CE) in quantum dot sensitized solar cells (QDSSCs) for polysulfide redox reactions. NiS thin films deposited on fluorine-doped tin oxide substrate results in formation of highly efficient CE for liquid-junction QDSSCs. Under illumination of 1 sun (100 mW cm -2), the QDSSC based NiS CE exhibited power conversion efficiency (η) of 2.97%, which is higher than platinum (1.45%) CE. Electrochemical impedance spectroscopy affirms that high value of η in NiS CE is due to the elevated electro-catalytic activity towards polysulfide electrolyte reduction and also due to the scale-down in the charge transfer resistance (3.16 Ω) at the CE-electrolyte interface.",

author = "Kim, {Hee Je} and Kim, {Dong Jo} and Rao, {S. Srinivasa} and Savariraj, {A. Dennyson} and Kim, {Soo Kyoung} and Son, {Min Kyu} and Gopi, {Chandu V.V.M.} and K. Prabakar",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0014437). ",

year = "2014",

month = may,

day = "1",

doi = "10.1016/j.electacta.2014.02.019",

language = "English",

volume = "127",

pages = "427--432",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells

AU - Kim, Hee Je

AU - Kim, Dong Jo

AU - Rao, S. Srinivasa

AU - Savariraj, A. Dennyson

AU - Kim, Soo Kyoung

AU - Son, Min Kyu

AU - Gopi, Chandu V.V.M.

AU - Prabakar, K.

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0014437).

PY - 2014/5/1

Y1 - 2014/5/1

N2 - Facile and nano-rice structured nickel sulfide (NiS) thin films were synthesized and utilized as counter electrode (CE) in quantum dot sensitized solar cells (QDSSCs) for polysulfide redox reactions. NiS thin films deposited on fluorine-doped tin oxide substrate results in formation of highly efficient CE for liquid-junction QDSSCs. Under illumination of 1 sun (100 mW cm -2), the QDSSC based NiS CE exhibited power conversion efficiency (η) of 2.97%, which is higher than platinum (1.45%) CE. Electrochemical impedance spectroscopy affirms that high value of η in NiS CE is due to the elevated electro-catalytic activity towards polysulfide electrolyte reduction and also due to the scale-down in the charge transfer resistance (3.16 Ω) at the CE-electrolyte interface.

AB - Facile and nano-rice structured nickel sulfide (NiS) thin films were synthesized and utilized as counter electrode (CE) in quantum dot sensitized solar cells (QDSSCs) for polysulfide redox reactions. NiS thin films deposited on fluorine-doped tin oxide substrate results in formation of highly efficient CE for liquid-junction QDSSCs. Under illumination of 1 sun (100 mW cm -2), the QDSSC based NiS CE exhibited power conversion efficiency (η) of 2.97%, which is higher than platinum (1.45%) CE. Electrochemical impedance spectroscopy affirms that high value of η in NiS CE is due to the elevated electro-catalytic activity towards polysulfide electrolyte reduction and also due to the scale-down in the charge transfer resistance (3.16 Ω) at the CE-electrolyte interface.

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U2 - 10.1016/j.electacta.2014.02.019

DO - 10.1016/j.electacta.2014.02.019

M3 - Article

AN - SCOPUS:84896529576

SN - 0013-4686

VL - 127

SP - 427

EP - 432

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Highly efficient solution processed nanorice structured NiS counter electrode for quantum dot sensitized solar cells

Abstract

All Science Journal Classification (ASJC) codes

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