Colloidal quantum dot solar cell power conversion efficiency optimization using analysis of current-voltage characteristics and electrode contact imaging by lock-in carrierography

2017 ◽  
Vol 25 (12) ◽  
pp. 1034-1050 ◽  
Author(s):  
Lilei Hu ◽  
Mengxia Liu ◽  
Andreas Mandelis ◽  
Alexander Melnikov ◽  
Edward H. Sargent
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Power Conversion ◽  
Efficiency Optimization ◽  
Current Voltage ◽  
Colloidal Quantum Dot ◽  
Electrode Contact ◽  
Current Voltage Characteristics ◽  
Lock In

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 Thickness Effect on F8T2/C60Bilayer Photovoltaic Devices

2012 ◽  
Vol 2012 ◽  
pp. 1-5
Author(s):  
Natasha A. D. Yamamoto ◽  
Andreia G. Macedo ◽  
Lucimara S. Roman
Keyword(s):  
Thermal Treatment ◽  
Power Conversion Efficiency ◽  
Variable Thickness ◽  
Series Resistance ◽  
Power Conversion ◽  
Thickness Effect ◽  
Photovoltaic Devices ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Bilayer Devices

Copolymers based on fluorene-thiophene units have presented promising efficiencies in photovoltaic devices applications. They present good transport properties mainly after thermal treatment of the polymer films. Here, we investigate the properties of bilayer devices formed by the heterojunction of the polymer F8T2 with variable thickness and the fullerene. The series resistance of the equivalent circuit associated with the device increases as the polymer film gets thicker. The current-voltage characteristics of the bilayer devices follow the Mott-Gurney law of SCLC. For the best performing device we measured 2.1% of power conversion efficiency.

scholarly journals A Physics-Based Analytical Model for Current–Voltage Characteristics of Perovskite Solar Cells Incorporating Bulk Recombination

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3868
Author(s):  
M. Zahangir Kabir
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Power Conversion Efficiency ◽  
Analytical Model ◽  
Conversion Efficiency ◽  
Carrier Transport ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Current Voltage ◽  
Current Voltage Characteristics

A physics-based compact analytical model for studying the current–voltage characteristics of perovskite solar cells has been proposed by considering the external voltage-dependent carrier transport, exponential photon absorption, and bulk charge carrier recombination. The explicit analytical expressions for both the forward dark and photocurrents in perovskite solar cells are derived. The current in the external circuit is calculated considering the actual solar spectrum. The mathematical models are verified and useful physical parameters are extracted by comparing the model calculations with the published experimental results on various perovskite solar cells. The proposed model shows excellent agreement with the experimental results. The power conversion efficiency can be improved further by enhancing the carrier transport in the perovskite layer. The improvement in charge carrier transport enhances the fill factor and hence the power conversion efficiency.

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.

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