Enhanced photovoltaic performance and time varied controllable growth of a CuS nanoplatelet structured thin film and its application as an efficient counter electrode for quantum dot-sensitized solar cells via a cost-effective chemical bath deposition

2015 ◽  
Vol 44 (44) ◽  
pp. 19330-19343 ◽  
Author(s):  
Chebrolu Venkata Thulasi-Varma ◽  
S. Srinivasa Rao ◽  
Challa Shesha Sai Pavan Kumar ◽  
Chandu V. V. M. Gopi ◽  
I. Kanaka Durga ◽  
...  

CuS counter electrodes on FTO substrates are synthesised.

2015 ◽  
Vol 3 (39) ◽  
pp. 10195-10206 ◽  
Author(s):  
Chebrolu Venkata Thulasi-Varma ◽  
S. Srinivasa Rao ◽  
Kanaka Durga Ikkurthi ◽  
Soo-Kyoung Kim ◽  
Tae-Su Kang ◽  
...  

This study describes the synthesis of monodispersed PbS nanocrystals by a facile chemical bath deposition and cost-effective approach.


2015 ◽  
Vol 44 (25) ◽  
pp. 11340-11351 ◽  
Author(s):  
Hee-Je Kim ◽  
Lee Myung-Sik ◽  
Chandu V. V. M. Gopi ◽  
M. Venkata-Haritha ◽  
S. Srinivasa Rao ◽  
...  

A maximum efficiency of 5.22% was achieved with the optimized 0.25 mM PVP based Mn–CuS counter electrode.


2018 ◽  
Vol 5 (5) ◽  
pp. 180335 ◽  
Author(s):  
Wenjiao Xu ◽  
Yuxiu Sun ◽  
Bin Ding ◽  
Jingbo Zhang

Zeolitic-imidazole frameworks (ZIFs), as novel porous materials, are attracting much attention in several fields due to their special advantages such as large specific surface area, versatile porosity and well-connected networks. Here, we develop a porous ZIF-derived catalytic thin film, which was coated on the conducting glass as a counter electrode (CE) to substitute costly platinum for quantum dot-sensitized solar cells (QDSSCs). A ZIF layer is first prepared by coating ZIF-67 powders on the conducting glass, followed by the careful calcination treatments in sulfur vapour (sulfuration) or nitrogen gas (carbonization). The structure and morphologies of the derived porous film are characterized by the measurements of XRD, SEM and BET, and the electrochemical properties in the polysulfide solution are evaluated by the measurements of Tafel curves and electrochemical impedance spectroscopies. The derived porous film is used as a CE to fabricate QDSSC with CdSe quantum dot-sensitized TiO 2 nanocrystalline thin film and the polysulfide solution. Compared with the photovoltaic performance of CdSe QDSSCs based on the CE prepared by the different sulfuration conditions, QDSSC based on the CE derived by the sulfuration for 30 min shows an excellent light-to-electric conversion efficiency of 3.77%, it is even higher than that of QDSSC based on Pt CE (2.98%). This work will open a new avenue to design a facile, low-cost and renewable CE for QDSSC.


2019 ◽  
Vol 7 (17) ◽  
pp. 4911-4933 ◽  
Author(s):  
Venkata Thulasivarma Chebrolu ◽  
Hee-Je Kim

We present a comprehensive overview of the development of quantum dot-sensitized solar cells (QDSCs), including photoanodes, sensitizers, electrolytes, and counter electrodes, and discuss future prospects for the development of highly efficient and stable QDSCs.


RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45592-45598 ◽  
Author(s):  
Shaghayegh Arabzade ◽  
Mahmoud Samadpour ◽  
Nima Taghavinia

Sequentially deposited CuS and PbS layers on the FTO substrate as a counter electrode in quantum dot sensitized solar cells.


2020 ◽  
Vol 7 (19) ◽  
pp. 3727-3734
Author(s):  
Zizun Tian ◽  
Zhonglu Qi ◽  
Yuhao Yang ◽  
Hailong Yan ◽  
Qianqiao Chen ◽  
...  

A Ti3C2/CuS composite has been fabricated as a counter electrode for quantum dot-sensitized solar cells by anchoring CuS nanoparticles on Ti3C2via a facile ion-exchange method at room temperature.


2017 ◽  
Vol 1 (6) ◽  
pp. 1217-1231 ◽  
Author(s):  
Meidan Ye ◽  
Xiaoyue Gao ◽  
Xiaodan Hong ◽  
Qun Liu ◽  
Chunfeng He ◽  
...  

Quantum dot-sensitized solar cells (QDSCs) are considered as promising candidates for cost-effective solar cells. This review comprehensively summarizes the recent rational strategies in material design for QDSCs with insights into photoanodes, QDs, electrolytes and counter electrodes.


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