The effect of manganese in a CdS/PbS colloidal quantum dot sensitized TiO2 solar cell to enhance its efficiency

2015 ◽  
Vol 39 (6) ◽  
pp. 4805-4813 ◽  
Author(s):  
Hee-Je Kim ◽  
Hyun-Dong Lee ◽  
Challa Shesha Sai Pavan Kumar ◽  
Sunkara Srinivasa Rao ◽  
Sang-Hwa Chung ◽  
...  
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Polysulfide Electrolyte ◽  
Colloidal Quantum Dot

The PbS/Mn-CdS electrode shows superior stability in a sulfide/polysulfide electrolyte with a power conversion efficiency (η) of 3.55%.

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.

Solution-processed perovskite-colloidal quantum dot tandem solar cells for photon collection beyond 1000 nm

2019 ◽  
Vol 7 (45) ◽  
pp. 26020-26028 ◽  
Author(s):  
Afsal Manekkathodi ◽  
Bin Chen ◽  
Junghwan Kim ◽  
Se-Woong Baek ◽  
Benjamin Scheffel ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Metal Halide ◽  
Solution Processed ◽  
Tandem Solar Cells ◽  
Colloidal Quantum Dot ◽  
Halide Perovskites

Multi-junction solar cells based on solution-processed metal halide perovskites offer a route to increased power conversion efficiency (PCE); however, the limited options for infrared (IR)-absorbing back cells have constrained progress.

scholarly journals Theoretical Study of One-Intermediate Band Quantum Dot Solar Cell

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Abou El-Maaty Aly ◽  
Ashraf Nasr
Keyword(s):  
Quantum Dots ◽  
Solar Cell ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Maximum Efficiency ◽  
Total Output ◽  
Bandgap Energy ◽  
Intermediate Band

The intermediate bands (IBs) between the valence and conduction bands play an important role in solar cells. Because the smaller energy photons than the bandgap energy can be used to promote charge carriers transfer to the conduction band and thereby the total output current increases while maintaining a large open circuit voltage. In this paper, the influence of the new band on the power conversion efficiency for the structure of the quantum dots intermediate band solar cell (QDIBSC) is theoretically investigated and studied. The time-independent Schrödinger equation is used to determine the optimum width and location of the intermediate band. Accordingly, achievement of maximum efficiency by changing the width of quantum dots and barrier distances is studied. Theoretical determination of the power conversion efficiency under the two different ranges of QD width is presented. From the obtained results, the maximum power conversion efficiency is about 70.42% for simple cubic quantum dot crystal under full concentration light. It is strongly dependent on the width of quantum dots and barrier distances.

scholarly journals Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. Wageh ◽  
Mahfoudh Raïssi ◽  
Thomas Berthelot ◽  
Matthieu Laurent ◽  
Didier Rousseau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Solution Processed ◽  
Transparent Conducting

AbstractPoly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) mixed with single-wall nanotubes (SWNTs) (10:1) and doped with (0.1 M) perchloric acid (HClO4) in a solution-processed film, working as an excellent thin transparent conducting film (TCF) in organic solar cells, was investigated. This new electrode structure can be an outstanding substitute for conventional indium tin oxide (ITO) for applications in flexible solar cells due to the potential of attaining high transparency with enhanced conductivity, good flexibility, and good durability via a low-cost process over a large area. In addition, solution-processed vanadium oxide (VOx) doped with a small amount of PEDOT-PSS(PH1000) can be applied as a hole transport layer (HTL) for achieving high efficiency and stability. From these viewpoints, we investigate the benefit of using printed SWNTs-PEDOT-PSS doped with HClO4 as a transparent conducting electrode in a flexible organic solar cell. Additionally, we applied a VOx-PEDOT-PSS thin film as a hole transporting layer and a blend of PTB7 (polythieno[3,4-b] thiophene/benzodithiophene): PC71BM (phenyl-C71-butyric acid methyl ester) as an active layer in devices. Zinc oxide (ZnO) nanoparticles were applied as an electron transport layer and Ag was used as the top electrode. The proposed solar cell structure showed an enhancement in short-circuit current, power conversion efficiency, and stability relative to a conventional cell based on ITO. This result suggests a great carrier injection throughout the interfacial layer, high conductivity and transparency, as well as firm adherence for the new electrode.

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