A highly efficient (>6%) Cd1−xMnxSe quantum dot sensitized solar cell

2014 ◽  
Vol 2 (46) ◽  
pp. 19653-19659 ◽  
Author(s):  
Jianjun Tian ◽  
Lili Lv ◽  
Chengbin Fei ◽  
Yajie Wang ◽  
Xiaoguang Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Highly Efficient ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells

The power conversion efficiency of CdS/CdSe sensitized solar cells is increased to 6.33% by doping Mn2+ into the CdSe quantum dot.

scholarly journals Boosting Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Integrating Concentrating Photovoltaic Concept with Double Photoanodes

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Pei Xu ◽  
Xiaopeng Chang ◽  
Runru Liu ◽  
Liying Wang ◽  
Xuesong Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photothermal Effect ◽  
Cell Architecture ◽  
Further Development ◽  
Sensitized Solar Cells

Abstract Despite great efforts dedicated to enhance power conversion efficiency (PCE) of quantum dot-sensitized solar cells (QDSSCs) in the past two decades, the efficiency of QDSSCs is still far behind its theoretical value. The present approaches for improving PCE are mainly focused on tailoring the bandgap of QDs to broadening light-harvesting and optimizing interfaces of component parts. Herein, a new solar cell architecture is proposed by integrating concentrating solar cell (CPV) concept into QDSSCs with double photoanode design. The Cu2S mesh is used as a counter electrode and sandwiched between two photoanodes. This designed battery structure can increase the PCE by 260% compared with a single photoanode. With the most extensively used CdS/CdSe QD sensitizers, a champion PCE of 8.28% (Voc = 0.629 V, Jsc = 32.247 mA cm−2) was achieved. This is mainly due to the increase in Jsc due to the double photoanode design and adoption of the CPV concept. In addition, another reason is that concentrated sunshine illumination induced a photothermal effect, accelerating the preceding chemical reactions associated with the conversion of polysulfide species. The cell fabrication and design reported here provides a new insight for further development of QDSSCs.

Glucose-derived porous carbon as a highly efficient and low-cost counter electrode for quantum dot-sensitized solar cells

2020 ◽  
Vol 44 (16) ◽  
pp. 6362-6368
Author(s):  
Guoqiang Long ◽  
Wenhua Li ◽  
Wanyue Luo ◽  
Qianqiao Chen ◽  
Qin Zhong
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Porous Carbon ◽  
Counter Electrode ◽  
Low Cost ◽  
Power Conversion ◽  
Highly Efficient ◽  
Sensitized Solar Cells

The power conversion efficiency of the QDSCs assembled with a CdS/CdSe sensitized TiO2 photoanode and the C900 CE is up to 5.61% under one sun illumination.

Charge recombination control for high efficiency CdS/CdSe quantum dot co-sensitized solar cells with multi-ZnS layers

2018 ◽  
Vol 47 (7) ◽  
pp. 2214-2221 ◽  
Author(s):  
Qiang Wu ◽  
Juan Hou ◽  
Haifeng Zhao ◽  
Zhiyong Liu ◽  
Xuanyu Yue ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Charge Recombination ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells

ZnS as an inorganic passivation agent has been proven to be effective in suppressing charge recombination and enhancing power conversion efficiency (PCE) in quantum dot-sensitized solar cells (QDSCs).

Donor-π-acceptor, triazine-linked porphyrin dyads as sensitizers for dye-sensitized solar cells

2015 ◽  
Vol 19 (01-03) ◽  
pp. 175-191 ◽  
Author(s):  
Ganesh D. Sharma ◽  
Galateia E. Zervaki ◽  
Kalliopi Ladomenou ◽  
Emmanuel N. Koukaras ◽  
Panagiotis P. Angaridis ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Carboxylic Acid ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Orbital Energy ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Two porphyrin dyads with the donor-π-acceptor molecular architecture, namely ( ZnP )-[triazine-gly]-( H 2 PCOOH ) and ( ZnP )-[triazine-Npip]-( H 2 PCOOH ), which consist of a zinc-metalated porphyrin unit and a free-base porphyrin unit covalently linked at their peripheries to a central triazine group, substituted either by a glycine in the former or a N-piperidine group in the latter, have been synthesized via consecutive amination substitution reactions of cyanuric chloride. The UV-vis absorption spectra and cyclic-voltammetry measurements of the two dyads, as well as theoretical calculations based on Density Functional Theory, suggest that they have suitable frontier orbital energy levels for use as sensitizers in dye-sensitized solar cells. Dye-sensitized solar cells based on ( ZnP )-[triazine-gly]-( H 2 PCOOH ) and ( ZnP )-[triazine-Npip]-( H 2 PCOOH ) have been fabricated, and they were found to exhibit power conversion efficiency values of 5.44 and 4.15%, respectively. Photovoltaic measurements (J–V curves) and incident photon to current conversion efficiency spectra of the two solar cells suggest that the higher power conversion efficiency value of the former solar cell is a result of its enhanced short circuit current, open circuit voltage, and fill factor values, as well as higher dye loading. This is ascribed to the existence of two carboxylic acid anchoring groups in ( ZnP )-[triazine-gly]-( H 2 PCOOH ), compared to one carboxylic acid group in ( ZnP )-[triazine-Npip]-( H 2 PCOOH ), which leads to a more effective binding onto the TiO 2 photoanode. Electrochemical impedance spectra show evidence that the ( ZnP )-[triazine-gly]-( H 2 PCOOH ) based solar cell exhibits a longer electron lifetime and more effective suppression of charge recombination reactions between the injected electrons and electrolyte.

scholarly journals Efficient passivated phthalocyanine-quantum dot solar cells

2015 ◽  
Vol 51 (9) ◽  
pp. 1732-1735 ◽  
Author(s):  
Vicente M. Blas-Ferrando ◽  
Javier Ortiz ◽  
Victoria González-Pedro ◽  
Rafael S. Sánchez ◽  
Iván Mora-Seró ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Quantum Dot Solar Cells ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells

The power conversion efficiency of CdSe and CdS quantum dot sensitized solar cells is enhanced up to 45% for CdSe and 104% for CdS by passivation with an asymmetrically disulfide substituted phthalocyanine.

Quasi-solid-state quantum dot sensitized solar cells with power conversion efficiency over 9% and high stability

2016 ◽  
Vol 4 (38) ◽  
pp. 14849-14856 ◽  
Author(s):  
Wenliang Feng ◽  
Leilei Zhao ◽  
Jun Du ◽  
Yan Li ◽  
Xinhua Zhong
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Stability ◽  
Power Conversion ◽  
Sodium Carboxymethylcellulose ◽  
Liquid Junction ◽  
Sensitized Solar Cells

A highly conductive gel electrolyte based on sodium carboxymethylcellulose was developed to construct quasi-solid-state quantum dot sensitized solar cells that exhibit power conversion efficiency over 9% and a significant improvement in stability compared to liquid-junction QDSCs.

scholarly journals Mn doped CdS passivated CuInSe2 quantum dot sensitized solar cells with remarkably enhanced photovoltaic efficiency

RSC Advances ◽  
2017 ◽  
Vol 7 (53) ◽  
pp. 33106-33112 ◽  
Author(s):  
Ikhtisham Mehmood ◽  
Yueli Liu ◽  
Keqiang Chen ◽  
Abdul Hakim Shah ◽  
Wen Chen
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Photovoltaic Efficiency ◽  
Sensitized Solar Cells ◽  
Mn Doped

This paper explores that novel architecture of CuInSe2/Mn-CdS exhibits remarkable enhancement in photovoltaic performance of the QDSSCs, which presents an excellent power conversion efficiency of 3.96%.

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