Effects of Structural Properties of νc-Si:H Absorber Layers on Solar Cell Performance

2000 ◽  
Vol 609 ◽  
Author(s):  
O. Vetterl ◽  
R. Carius ◽  
L. Houben ◽  
C. Scholten ◽  
M. Luysberg ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Volume Fraction ◽  
Small Diameter ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Preparation Conditions ◽  
Growth Regime ◽  
Carrier Extraction

ABSTRACTThin film microcrystalline silicon solar cells with absorber layers of various structural composition have been prepared. The highest conversion efficiency is observed at preparation conditions close to the transition to the amorphous growth regime, i.e. crystalline volume fraction is high but not at its maximum. The optimized material consists of crystalline “fibers” with small diameter which extend through the whole absorber layer. On further approach to the transition regime a set in of amorphous growth can be observed, resulting in decreasing solar cell performance. Surprisingly, material prepared under conditions favoring highly crystalline growth exhibits a less efficient carrier extraction if applied to the solar cell. We discuss increasing bulk recombination as possible cause for this observation. The maximum conversion efficiency obtained was 8.7 % for a 1 νm single junction solar cell. Using our optimized deposition conditions with simultaneously higher discharge powers the deposition rate can be increased up to 4.6 Å/s at the high efficiency of 8.3 %.

Advanced CdII complexes as high efficiency co-sensitizers for enhanced dye-sensitized solar cell performance

2015 ◽  
Vol 44 (41) ◽  
pp. 18187-18195 ◽  
Author(s):  
Song Gao ◽  
Rui Qing Fan ◽  
Xin Ming Wang ◽  
Liang Sheng Qiang ◽  
Li Guo Wei ◽  
...  
Keyword(s):  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Cell Performance ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Performance ◽  
Dye Sensitized

The prepared complexes 1 and 2 can serve as co-sensitizers to enhance the power-conversion efficiency.

Chemical Composition Dependence of Cu2ZnSnS4 Absorbers Fabricated by Sulfurization of Thermal Evaporated Metal Precursors and Solar Cell Performance

2015 ◽  
Vol 1738 ◽  
Author(s):  
Liyuan Zhang ◽  
Sreejith Karthikeyan ◽  
Mandip J. Sibakoti ◽  
Stephen A. Campbell
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Chemical Composition ◽  
Conversion Efficiency ◽  
Small Deviation ◽  
Short Circuit ◽  
Cell Performance ◽  
Czts Thin Film ◽  
Solar Cell Performance

ABSTRACTWe investigate the synthesis of kesterite Cu2ZnSnS4 (CZTS) thin films using thermal evaporation from copper, zinc and tin pellets and post-annealing in a sulfur atmosphere. The effects of chemical composition were studied both on the absorber layer properties and on the final solar cell performance. It is confirmed that CZTS thin film chemical composition affects the carrier concentration profile, which then influences the solar cell properties. Solar cells using a CZTS thin film with composition ratio Cu/(Zn+Sn) = 0.87, and Zn/Sn = 1.24 exhibited an open-circuit voltage of 483 mV, a short-circuit current of 14.54 mA/cm2, a fill factor of 37.66 % and a conversion efficiency of 2.64 %. Only a small deviation from the optimal chemical composition can drop device performance to a lower level, which confirms that the CZTS solar cells with high conversion efficiency existed in a relatively narrow composition region.

scholarly journals Performance Optimization of the InGaP/GaAs Dual-Junction Solar Cell Using SILVACO TCAD

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Marwa S. Salem ◽  
Omar M. Saif ◽  
Ahmed Shaker ◽  
Mohamed Abouelatta ◽  
Abdullah J. Alzahrani ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Performance Optimization ◽  
Solar Spectrum ◽  
Cell Performance ◽  
Window Layer ◽  
Electrical Performance ◽  
Performance Parameters ◽  
Solar Cell Performance ◽  
Cell Window

In this work, an optimization of the InGaP/GaAs dual-junction (DJ) solar cell performance is presented. Firstly, a design for the DJ solar cell based on the GaAs tunnel diode is provided. Secondly, the used device simulator is calibrated with recent experimental results of an InGaP/GaAs DJ solar cell. After that, the optimization of the DJ solar cell performance is carried out for two different materials of the top window layer, AlGaAs and AlGaInP. For AlGaAs, the optimization is carried out for the following: aluminum (Al) mole fraction, top window thickness, top base thickness, and bottom BSF doping and thickness. The electrical performance parameters of the optimized cell are extracted: J SC = 18.23   mA / c m 2 , V OC = 2.33   V , FF = 86.42 % , and the conversion efficiency ( η c ) equals 36.71%. By using AlGaInP as a top cell window, the electrical performance parameters for the optimized cell are J SC = 19.84   mA / c m 2 , V OC = 2.32   V , FF = 83.9 % , and η c = 38.53 % . So, AlGaInP is found to be the optimum material for the InGaP/GaAs DJ cell top window layer as it gives 4% higher conversion efficiency under 1 sun of the standard AM1.5G solar spectrum at 300 K in comparison with recent literature results. All optimization steps and simulation results are carried out using the SLVACO TCAD tool.

Limiting Perovskite Solar Cell Performance by Heterogeneous Carrier Extraction

2016 ◽  
Vol 55 (42) ◽  
pp. 13067-13071 ◽  
Author(s):  
Wenming Tian ◽  
Rongrong Cui ◽  
Jing Leng ◽  
Junxue Liu ◽  
Yajuan Li ◽  
...  
Keyword(s):  
Solar Cell ◽  
Perovskite Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Carrier Extraction

scholarly journals Numerical Modeling of High Conversion Efficiency FTO/ZnO/CdS/CZTS/MO Thin Film-Based Solar Cells: Using SCAPS-1D Software

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1468
Author(s):  
Samer H. Zyoud ◽  
Ahed H. Zyoud ◽  
Naser M. Ahmed ◽  
Anupama R. Prasad ◽  
Sohaib Naseem Khan ◽  
...  
Keyword(s):  
Thin Film ◽  
Numerical Modeling ◽  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Short Circuit ◽  
Effect Of Temperature ◽  
Solar Cell Performance ◽  
The Impact

The numerical modeling of a copper zinc tin sulfide (CZTS)-based kesterite solar cell is described in detail in this article. To model FTO/ZnO/CdS/CZTS/MO structured solar cells, the Solar Cell Capacitance Simulator-one-dimension (SCAPS-1D) program was utilized. Numerical modeling was used to estimate and assess the parameters of various photovoltaic thin film solar cells. The impact of different parameters on solar cell performance and conversion efficiency were explored. Because the response of a solar cell is partly determined by its internal physical mechanism, J-V characteristic characteristics are insufficient to define a device’s behavior. Regardless of the conviction in solar cell modeling, variable attributes as well as many probable conditions must be handled for simulation. Promising optimized results were obtained with a conversion efficiency of (η% = 25.72%), a fill factor of (FF% = 83.75%), a short-circuit current of (JSC  = 32.96436 mA/cm2), and an open-circuit voltage of (VOC = 0.64 V). The findings will aid in determining the feasibility of manufacturing high-efficiency CZTS-based solar cells. First, in the SCAPS-1D environment, the impacts of experimentally constructed CZTS solar cells were simulated. The experimental data was then compared to the simulated results from SCAPS-1D. After optimizing cell parameters, the conversion efficiency of the improved system was observed to rise. The influence of system factors, such as the thickness, acceptor, and donor carrier concentration densities of the absorber and electron transport layers, and the effect of temperature on the efficiency of CZTS-based photovoltaic cells, was explored using one-dimensional SCAPS-1D software. The suggested findings will be extremely useful to engineers and researchers in determining the best method for maximizing solar cell efficiency, as well as in the development of more efficient CZTS-based solar cells.

Simulative Parametric Study on Heterojunction Thin Film Solar Cells Incorporating Interfacial Nanoclusters Layer

2019 ◽  
Vol 6 (1-2) ◽  
pp. 23-28 ◽  
Author(s):  
Megha Grover ◽  
Monika Nehra ◽  
Deepak Kedia
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Layer Thickness ◽  
Active Layer ◽  
Interfacial Layer ◽  
High Efficiency ◽  
Copper Phthalocyanine ◽  
Cell Performance ◽  
Active Layer Thickness ◽  
Solar Cell Performance

Abstract Organic solar cells deal with small organic molecules for absorption of light at low cost and high efficiency. In this paper, we have analyzed the photovoltaic (PV) characteristics of double heterojunction solar cell that consists of copper phthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic bis-benzimidazole (PTCBI) thin films. Here, CuPc and PTCBI layers are combined by an interfacial layer consisting of nanoscale dots. Different plasmonic materials (i. e. Ag, Au, and graphene) are selected as alternative nanoscale dot layer to examine their effect on solar cell performance. Further, the solar cell performance is also examined via variation in active layer thickness. The choice of interfacial layer material and variation in active layer thickness offer grounds for future efficient PV cells.

Ca-doped CuS/graphene sheet nanocomposite as a highly catalytic counter electrode for improving quantum dot-sensitized solar cell performance

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10880-10886 ◽  
Author(s):  
Seyede Sara Khalili ◽  
Hossein Dehghani
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Energy Conversion ◽  
Graphene Sheet ◽  
Conversion Efficiency ◽  
Counter Electrode ◽  
Energy Conversion Efficiency ◽  
Cell Performance ◽  
Solar Cell Performance

In this study, the highest energy conversion efficiency is obtained by Ca- CuS/GS CE, corresponding to efficiency increment (70%) compared to the CuS bare CE.

Grain growth study of perovskite thin films prepared by flash evaporation and its effect on solar cell performance

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48851-48857 ◽  
Author(s):  
Haitao Xu ◽  
Yanglin Wu ◽  
Fuzong Xu ◽  
Jiabin Zhu ◽  
Chaowei Ni ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cell ◽  
Grain Growth ◽  
High Efficiency ◽  
Cell Performance ◽  
Flash Evaporation ◽  
Growth Study ◽  
Solar Cell Performance ◽  
Grain Sizes

Flash-evaporated perovskite films with large grain sizes lead to high efficiency solar cell devices.

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