Earth-abundant Cu2SnSe3 thin film counter electrode for high-efficiency quantum dot-sensitized solar cells

Liu, Feng; Zhu, Jun; Li, Yang; Wei, Jian; Lv, Mei; Xu, Yishen; Zhou, Li; Hu, Linhua; Dai, Songyuan

doi:10.1016/j.jpowsour.2015.05.038

Cited by 39 publications

(13 citation statements)

References 71 publications

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“…The annealing treatment improved the crystallinity and the conductivity of NiCo 2 S 4 , so the fast charge transfer at CE/electrolyte interface can cause a change in the concentration gradient in the electrolyte solution, which influences the recombination rates at the photoanode/electrolyte interface and consequently the conduction band position of the photoanode. Meanwhile, the high conductivity of NiCo 2 S 4 -an CE also increased the photocurrent of cell [ 41 ]. J–V parameters are in line with the electrocatalytic ability of CEs discussed in the CV, Tafel polarization, and EIS.…”

Section: Resultsmentioning

confidence: 99%

Ti Porous Film-Supported NiCo2S4 Nanotubes Counter Electrode for Quantum-Dot-Sensitized Solar Cells

et al. 2018

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In this paper, a novel Ti porous film-supported NiCo2S4 nanotube was fabricated by the acid etching and two-step hydrothermal method and then used as a counter electrode in a CdS/CdSe quantum-dot-sensitized solar cell. Measurements of the cyclic voltammetry, Tafel polarization curves, and electrochemical impedance spectroscopy of the symmetric cells revealed that compared with the conventional FTO (fluorine doped tin oxide)/Pt counter electrode, Ti porous film-supported NiCo2S4 nanotubes counter electrode exhibited greater electrocatalytic activity toward polysulfide electrolyte and lower charge-transfer resistance at the interface between electrolyte and counter electrode, which remarkably improved the fill factor, short-circuit current density, and power conversion efficiency of the quantum-dot-sensitized solar cell. Under illumination of one sun (100 mW/cm2), the quantum-dot-sensitized solar cell based on Ti porous film-supported NiCo2S4 nanotubes counter electrode achieved a power conversion efficiency of 3.14%, which is superior to the cell based on FTO/Pt counter electrode (1.3%).

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Section: Resultsmentioning

confidence: 99%

Ti Porous Film-Supported NiCo2S4 Nanotubes Counter Electrode for Quantum-Dot-Sensitized Solar Cells

et al. 2018

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“…Recently, Dwivedi et al reported an inverted hybrid TFSCs using CTSe-nanocrystals in the form of (glass/ITO/ ZnO/P3HT:PCBM:CTSe-nanocrystal/Ag) and showed a maximum of 1.35% PCE [31]. Besides, Liu et al reported for the first time TFSCs based on quantum dot sensitized (QDSC) CTSe with a device structure of (glass/FTO/CTSe/ CdSe-QD-sensitized porous TiO 2 ) [32]. The device showed a record PCE of 4.93%.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of a high-performance Cd-free Cu2SnSe3 solar cells with SnS electron-blocking hole transport layer and TiO2 electron transport layer by SCAPS-1D

Rahman

2021

SN Appl. Sci.

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This article presents numerical investigations of the novel (Ni/SnS/Cu2SnSe3/TiO2/ITO/Al) heterostructure of Cu2SnSe3 based solar cell using SCAPS-1D simulator. Purpose of this research is to explore the influence of SnS hole transport layer (HTL) and TiO2 electron transport layer (ETL) on the performance of the proposed cell. Based on the proposed device architecture, effects of thickness and carrier concentration of absorber layer, SnS HTL, TiO2 ETL, absorber layer defect density, operating temperature and back-contact metal work function (BMWF) are studied to improve the cell performance. Our initial simulation results show that if SnS HTL is not introduced, the efficiency of standard Cu2SnSe3 cell is 1.66%, which is well agreed with the reported experimental results in literature. However, by using SnS and TiO2 as HTL and ETL, respectively and optimizing the cell parameters, a simulated efficiency of up to 27% can be achieved. For Cu2SnSe3 absorber layer, 5 × 1017 cm−3 and 1500 nm are the optimal values of carrier concentration and thickness, respectively. On the other hand, the BMWF is estimated to be greater than 5.2 eV for optimum cell performance. Results of this contribution can provide constructive research avenues for thin-films photovoltaic industry to fabricate cost-effective, high-efficiency and cadmium-free Cu2SnSe3-based solar cells.

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“…The next obstacle in QDSSCs is the poor electrical catalytic activity between the electrolytes and the commercial Pt counter electrode. This issue has been the focus of much research in recent years [ 12 – 22 ]. It has been determined that Pt counter electrodes should not be used when polysulfide electrolytes are used since the sulfur compounds are strongly adsorb to the Pt surface, thus leading to decreasing catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, metal sulfides such as Cu 2 S, CuS, CoS, PbS, NiS, CoS/NiS, multi-elemental chalcogenide (Cu 2 ZnSn(S 1 − x Se x ) 4 ), earth-abundant Cu 2 SnSe 3 and other carbon-based materials have been used as novel counter electrodes. This would lead to higher power conversion efficiencies of the QDSSCs ( η around 3%) [ 12 – 22 ].…”

Section: Introductionmentioning

confidence: 99%

The Study of Metal Sulfide as Efficient Counter Electrodes on the Performances of CdS/CdSe/ZnS-co-sensitized Hierarchical TiO2 Sphere Quantum Dot Solar Cells

2017

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The effects of using different counter electrode metal sulfides on the performances of solar cells made with CdS/CdSe/ZnS quantum dots co-sensitized onto hierarchical TiO2 spheres (HTSs) used as photo-electrode are reported. The HTS in the QDSSCs is composed of an assembly of numerous TiO2 spheres made by the solvolthermal method. The photoelectrical performance of HTS/CdS/CdSe/ZnS coupled to CuS or to Cu2ZnSn(S1 − xSex)4 with x = 0, 0.5, or 1.0 counter electrodes (CEs) were compared to those coupled to Pt CE. The HTS/CdS/CdSe/ZnS coupled to the CuS CE showed the highest power conversion efficiency η (of 3.46%). The efficiencies η of 1.88, 2.64, and 2.06% were obtained for CZTS (x = 0), CZTS0.5Se0.5 (x = 0.5), and CZTSe (x = 1), respectively. These are significantly higher than those using a standard Pt CE (η = 0.37%). These higher efficiencies are the results of the higher electrocatalytic activities when the metal sulfide CEs are used.

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Earth-abundant Cu2SnSe3 thin film counter electrode for high-efficiency quantum dot-sensitized solar cells

Cited by 39 publications

References 71 publications

Ti Porous Film-Supported NiCo2S4 Nanotubes Counter Electrode for Quantum-Dot-Sensitized Solar Cells

Ti Porous Film-Supported NiCo2S4 Nanotubes Counter Electrode for Quantum-Dot-Sensitized Solar Cells

Design and simulation of a high-performance Cd-free Cu2SnSe3 solar cells with SnS electron-blocking hole transport layer and TiO2 electron transport layer by SCAPS-1D

The Study of Metal Sulfide as Efficient Counter Electrodes on the Performances of CdS/CdSe/ZnS-co-sensitized Hierarchical TiO2 Sphere Quantum Dot Solar Cells

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