TY - JOUR
T1 - Hierarchical Cu7S4 nanotubes assembled by hexagonal nanoplates with high catalytic performance for quantum dot-sensitized solar cells
AU - Wang, Min
AU - Chen, Wenlong
AU - Zai, Jiantao
AU - Huang, Shoushuang
AU - He, Qingquan
AU - Zhang, Wei
AU - Qiao, Qiquan
AU - Qian, Xuefeng
N1 - Funding Information:
We acknowledge National Natural Science Foundation of China ( 21371121 and 21331004 ), Shanghai Chenguang-project ( 13CG10 ), Open funds of SKLMMC of SJTU ( mmc-kf14-09 ) and Science and Technology Commission of Shanghai Municipality ( 13521101500 , 14DZ1205700 and 14DZ2250800 ) for financial support. Q.Q. acknowledge the support from US-Pak Science and Technology Cooperation Program and South Dakota State University Electrical Engineering PhD program.
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2015/12/20
Y1 - 2015/12/20
N2 - As a kind of promising generation solar cells, the catalytic properties of counter electrodes (CEs) play a key factor on the performance of QDSSCs (quantum dot-sensitized solar cells) at present. Here, hierarchical Cu7S4 nanotubes (Cu7S4-HNT) assembled by hexagonal nanoplates have been prepared by an in-situ growth route and etching process at room temperature. The formation mechanism of the unique morphology is also proposed. Because of the rapid diffusion of electrons and electrolyte, abundant catalytic sites and high stability, the as-prepared Cu7S4-HNT combined the characteristics of nanotube and hierarchical structure can improve the catalytic performance of CEs. QDSSCs based on the Cu7S4-HNT CEs possess a high power conversion efficiency of 4.53%, superior to those with the commonly used Cu2S/brass (3.3%) or the referenced Pt (1.79%) CEs. What's more, the Cu7S4-HNT CE still shows excellent stability in electrolyte after 1000 CV cycles.
AB - As a kind of promising generation solar cells, the catalytic properties of counter electrodes (CEs) play a key factor on the performance of QDSSCs (quantum dot-sensitized solar cells) at present. Here, hierarchical Cu7S4 nanotubes (Cu7S4-HNT) assembled by hexagonal nanoplates have been prepared by an in-situ growth route and etching process at room temperature. The formation mechanism of the unique morphology is also proposed. Because of the rapid diffusion of electrons and electrolyte, abundant catalytic sites and high stability, the as-prepared Cu7S4-HNT combined the characteristics of nanotube and hierarchical structure can improve the catalytic performance of CEs. QDSSCs based on the Cu7S4-HNT CEs possess a high power conversion efficiency of 4.53%, superior to those with the commonly used Cu2S/brass (3.3%) or the referenced Pt (1.79%) CEs. What's more, the Cu7S4-HNT CE still shows excellent stability in electrolyte after 1000 CV cycles.
KW - Copper sulfide
KW - Counter electrodes
KW - Hierarchical nanotubes
KW - Quantum dot-sensitized solar cells
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U2 - 10.1016/j.jpowsour.2015.09.008
DO - 10.1016/j.jpowsour.2015.09.008
M3 - Article
AN - SCOPUS:84941354364
SN - 0378-7753
VL - 299
SP - 212
EP - 220
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -