Efficiency Enhancement by Optimizing Selenization Time for Co-Sputtered Cu2ZnSn(S,Se)4 Thin Film Solar Cells

2019 ◽  
Vol 793 ◽  
pp. 35-39
Author(s):  
Luan Hong Sun ◽  
Hong Lie Shen ◽  
Hu Lin Huang ◽  
Hui Rong Shang
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Grain Size ◽  
Optical Properties ◽  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Thin Film Solar Cells ◽  
Efficiency Enhancement ◽  
Diffraction Angle

To reveal the effects of annealing condition on CZTSSe thin film solar cells, co-sputtering and subsequent selenization were used to prepare CZTSSe thin films. Structural, morphological and optical properties of CZTSSe thin films were investigated. CZTSSe thin films with various Se/(S+Se) ratio ranging from 0.69-0.78 were obtained. Representative peaks corresponding to CZTSSe in XRD and Raman results showed a slight shift to lower diffraction angle and wavenumbers. Selenization time significantly influenced the morphologies of CZTSSe films and the gradual grown up grain size was observed. VOCdeficit values down to 839 mV was achieved for the best cell. CZTSSe solar cell with the selenization time of 10 min showed a best conversion efficiency of 5.32%, which presented a 50% enhancement comparing to the solar cells with insufficient and over-selenized absorbers.

Porphyrin Assembly with Fullerenes for Photovoltaic Applications

2008 ◽  
Vol 1091 ◽  
Author(s):  
Takashi Sagawa ◽  
Osamu Yoshikawa ◽  
Hirokuni Jintoku ◽  
Makoto Takafuji ◽  
Hirotaka Ihara ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Solar Energy ◽  
Conversion Efficiency ◽  
Thin Film Solar Cells ◽  
Organic Thin Film ◽  
Photovoltaic Applications

AbstractMorphologically controllable thin-films of a zinc-containing tetraphenylporphyrin (ZnTPP) combined with an L-glutamide lipid has been fabricated and complexation of ZnTPP with fullerene was examined for organic thin-film solar cells, which gave 3 times enhancement of solar energy-to-electricity conversion efficiency through chlorobenzene-annealing in comparison with the conversion efficiency of untreated one.

Cu2ZnSnS4 thin film solar cells with 5.8% conversion efficiency obtained by a facile spray pyrolysis technique

RSC Advances ◽  
2015 ◽  
Vol 5 (95) ◽  
pp. 77565-77571 ◽  
Author(s):  
Thi Hiep Nguyen ◽  
Wilman Septina ◽  
Shotaro Fujikawa ◽  
Feng Jiang ◽  
Takashi Harada ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Spray Pyrolysis ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Spray Pyrolysis Technique ◽  
Thin Film Solar Cells ◽  
Spray Pyrolysis Deposition ◽  
Cu2znsns4 Thin Film

A CZTS-based thin film solar cell with a powder conversion efficiency of 5.8% was obtained by using facile spray pyrolysis deposition followed by annealing.

CuInSe2 thin film solar cells prepared by low-cost electrodeposition techniques from a non-aqueous bath

RSC Advances ◽  
2015 ◽  
Vol 5 (109) ◽  
pp. 89635-89643 ◽  
Author(s):  
Priyanka U. Londhe ◽  
Ashwini B. Rohom ◽  
Nandu B. Chaure
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Solar Cell ◽  
Low Cost ◽  
Cell Structure ◽  
Power Conversion ◽  
Thin Film Solar Cells ◽  
Solar Cell Structure ◽  
Cuinse2 Thin Film

Highly crystalline and stoichiometric CIS thin films have been electrodeposited from non-aqueous bath at temperature 130 °C. Superstrate solar cell structure (FTO/CdS/CIS/Au) exhibited 4.5% power conversion efficiency.

Graded Buffer Layer Effect on Performance of the Amorphous Silicon Thin Film Solar Cells

2011 ◽  
Vol 685 ◽  
pp. 60-64 ◽  
Author(s):  
Shui Yang Lien ◽  
Meng Jia Yang ◽  
Yang Shih Lin ◽  
Chia Fu Chen ◽  
Po Hung Lin ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Buffer Layer ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Open Circuit ◽  
Thin Film Solar Cells ◽  
Silicon Thin Film

It is widely accepted that graded buffer layer between the p-layer and i-layer increase the efficiency of amorphous silicon solar cells. The open-circuit voltage (Voc), short current density (Jsc) and fill factor (FF) of the thin film solar cell are obviously increased. In the present study, hydrogenated amorphous silicon (a-Si:H) thin film solar cells have been fabricated by 27.12 MHz plasma enhanced chemical vapor deposition (PECVD). We discussed the three conditions at the p/i interface without buffer layer, buffer layer and graded buffer layer of thin film solar cells by TCAD software. The influences of the performance of the solar cell with the different buffer layer are investigated. The cell with graded buffer layer has higher efficiency compared with the cells without buffer layer and buffer layer. The graded buffer layer enhances the conversion efficiency of the solar cell by improving Vocand FF. It could be attributed to a reduction of interface recombination rate near the junction. The best performance of conversion efficiency (η)=8.57% (Voc=0.81 V, Jsc=15.46 mA/cm2, FF=68%) of the amorphous silicon thin film solar cell was achieved.

Band gap grading and photovoltaic performance of solution-processed Cu(In,Ga)S2 thin-film solar cells

2014 ◽  
Vol 16 (48) ◽  
pp. 27112-27118 ◽  
Author(s):  
So Hyeong Sohn ◽  
Noh Soo Han ◽  
Yong Jin Park ◽  
Seung Min Park ◽  
Hee Sang An ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Properties ◽  
Solar Cells ◽  
Band Gap ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Thin Film Solar Cells ◽  
Electrical Characteristics ◽  
Coating Methods

The photophysical properties of CIGS thin films, prepared by solution-based coating methods, are investigated to understand the correlation between the optical properties and the electrical characteristics of solar cells.

scholarly journals First-principles calculation on electronic properties of Bismuth-halide inorganic perovskites for solar cell

2021 ◽  
Vol 01 (01) ◽  
pp. 56-57
Author(s):  
Galhenage A. Sewvandi ◽  
◽  
J.T.S.T. Jayawardane ◽  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Photovoltaic Effect ◽  
Power Conversion ◽  
Thin Film Solar Cells ◽  
Halide Perovskite ◽  
Lead Halide

Solar energy is a commonly used alternate source of energy and it can be utilized based on the principle of the photovoltaic effect. The photovoltaic effect converts sun energy into electrical energy using photovoltaic devices (solar cells). A solar cell device should have high efficiency and a long lifetime to be commercially beneficial. Presently, silicon and thin-film solar cells are widely employed. The crystalline solar cells are more efficient but they are also expensive. Thin-film solar cells are formed by placing one or more thin layers of photovoltaic materials on different substrates. Although these cells have a lower cost, they are also less efficient compared to Si-based solar cells. Organic-inorganic hybrid lead halide perovskite solar cells are one of the most promising low-cost power conversion efficiency technologies that could exceed the 26% threshold. However, the lack of environmental stability and of high lead toxicity are the main bottlenecks that impede the future industrialization and commercialization hybrid lead halide perovskite. Hence It is important to achieve high power conversion efficiency while also maintaining stability and non-toxicity in the development of new lead-free perovskite materials.

Structural Properties of CdTe Thin Films for Solar Cell Applications Deposited on Flexible Foil Substrates

2009 ◽  
Vol 1165 ◽  
Author(s):  
Vasilios Palekis ◽  
Deidra Ranel Hodges ◽  
Don L Morel ◽  
Lee Stefanakos ◽  
Chris S Ferekides
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Growth Rate ◽  
Grain Size ◽  
Solar Cells ◽  
Solar Cell ◽  
Substrate Temperature ◽  
Source Temperature ◽  
Cdte Solar Cells ◽  
Cdte Thin Films

AbstractCadmium telluride (CdTe) is a leading thin film photovoltaic (PV) material due to its near ideal band gap of 1.45 eV and its high optical absorption coefficient. The typical CdTe thin film solar cell is of the superstrate configuration where a window layer (CdS), the absorber (CdTe), and a back contact are deposited onto a glass slide coated with a transparent electrode. Substrate CdTe solar cells where the above listed films are deposited in reverse order are not common. In this study, the growth of CdTe thin films deposited on foil substrates by the close-spaced sublimation (CSS) has been investigated for the purpose of fabricating substrate based CdTe solar cells. The CdTe films were deposited at substrate temperatures (TSUB) in the range of 300 to 600°C, and source temperatures (TSRC) in the 600 to 650°C range. The effect of the substrate-source temperature variations on the growth rate, film structure and morphology were studied using XRD and SEM. It was found that for low substrate temperature and as the growth rate increases, grain size was the same but the films appeared to be more uniform and more densely packed with less or no pinholes. The growth rate increased as the source temperature increased. The substrate temperature clearly influences the grain growth and the preferred orientation. As the substrate temperature increased the growth rate decreased and the grain size varied from 2 to 6 μm. XRD analysis showed that with the increase in substrate temperature film orientation changes from preferential along the (111) direction to a mix of (111) (220) and (311).

scholarly journals Analysis of the High Conversion Efficienciesβ-FeSi2and BaSi2n-i-p Thin Film Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Jung-Sheng Huang ◽  
Kuan-Wei Lee ◽  
Yu-Hsiang Tseng
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Current Density ◽  
Thin Film Solar Cell ◽  
Thin Film Solar Cells ◽  
Drift Current ◽  
Current Densities ◽  
Si Thin Film

Bothβ-FeSi2and BaSi2are silicides and have large absorption coefficients; thus they are very promising Si-based new materials for solar cell applications. In this paper, the dcI-Vcharacteristics of n-Si/i-βFeSi2/p-Si and n-Si/i-BaSi2/p-Si thin film solar cells are investigated by solving the charge transport equations with optical generations. The diffusion current densities of free electron and hole are calculated first. Then the drift current density in the depletion regions is obtained. The total current density is the sum of diffusion and drift current densities. The conversion efficiencies are obtained from the calculatedI-Vcurves. The optimum conversion efficiency of n-Si/i-βFeSi2/p-Si thin film solar cell is 27.8% and that of n-Si/i-BaSi2/p-Si thin film solar cell is 30.4%, both are larger than that of Si n-i-p solar cell (ηis 20.6%). These results are consistent with their absorption spectrum. The calculated conversion efficiency of Si n-i-p solar cell is consistent with the reported researches. Therefore, these calculation results are valid in this work.

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