CNT@rGO@MoCuSe Composite as an Efficient Counter Electrode for Quantum Dot-Sensitized Solar Cells

被引:62
作者
Gopi, Chandu V. V. Muralee [1 ]
Singh, Saurabh [2 ]
Reddy, Araveeti Eswar [1 ]
Kim, Hee-Je [1 ]
机构
[1] Pusan Natl Univ, Sch Elect & Comp Engn, Busandaehak Ro 63 Beon Gil, Busan 46241, South Korea
[2] Pusan Natl Univ, Sch Mat Sci & Engn, Busan 46241, South Korea
关键词
CNT@rGO@MoCuSe; counter electrode; quantum dot-sensitized solar cells; electrocatalytic activity; stability;
D O I
10.1021/acsami.7b18526
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This paper reports an efficient and simple strategy for the synthesis of molybdenum copper selenide (MoCuSe) nanoparticles decorated with a combination of a carbon nanotube (CNT) network and reduced graphene oxide (rGO) nanosheets to form an integrated hybrid architecture (CNT@rGO@MoCuSe) using a two-step hydrothermal approach. The synthesized hybrid CNT@rGO@MoCuSe material onto the Ni foam substrate is applied successfully as an effective counter electrode (CE) in quantum dot-sensitized solar cells (QDSSCs). A highly conductive CNT@rGO network grown on electrochemically active MoCuSe particles provides a large surface area and exhibits a rapid electron transport rate at the interface of CE/electrolyte. As a result, the QDSSC with the designed CNT@rGO@MoCuSe CE shows a higher power conversion efficiency of 8.28% under 1 sun (100 mW cm(-2)) irradiation, which is almost double the efficiency of 4.04% for the QDSSC with the MoCuSe CE. Furthermore, the QDSSC based on the CNTgrGO@MoCuSe CE delivers superior stability at a working state for over 100 h. Therefore, CNT@rGO@MoCuSe is very promising as a stable and efficient CE for QDSSCs and offers new opportunities for the development of hybrid, effective, and robust materials for energy-related fields.
引用
收藏
页码:10036 / 10042
页数:7
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