Novel NIR LaGaO3:Cr3+,Ln3+ (Ln = Yb, Nd, Er) phosphors via energy transfer for C–Si-based solar cells

2019 ◽  
Vol 48 (30) ◽  
pp. 11460-11468 ◽  
Author(s):  
Liang Zhang ◽  
Langping Dong ◽  
Baiqi Shao ◽  
Shuang Zhao ◽  
Hongpeng You
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Solar Cell ◽  
Potential Application ◽  
Spectral Response ◽  
Broadband Absorption ◽  
Si Solar Cell ◽  
Nir Emission

Novel NIR phosphors possess broadband absorption in the UV–Vis region and strong NIR emission, matching well with the spectral response of the C–Si solar cell and having a potential application in the C–Si solar cell.

scholarly journals Hybrid(Luminescent and Fresnel ) Concentrators to Improve Solar Panel Conversion Efficiency

2011 ◽  
Vol 8 (2) ◽  
pp. 577-580 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Crystalline Silicon ◽  
Spectral Response ◽  
Silicon Solar Cells ◽  
The Sun ◽  
Crystalline Silicon Solar Cells ◽  
Si Solar Cell ◽  
Irradiance Spectrum

The spectral response of the Si solar cell does not coincidence with the sun irradiance spectrum, so the efficiency of the Si solar cell is not high. To improve the Si solar cell one try to make use of most region of the sun spectrum by using dyes which absorb un useful wavelengths and radiate at useful region of spectrum (by stock shift). Fluorescence's dye is used as luminescent concentrator to increase the efficiency of the solar cell. The results show that the performance efficiency and out power for crystalline silicon solar cells are improved.

scholarly journals Alq3 (tris(8-hydroxyquinolinato)aluminium) as a selective n-type contact for FAMAPIBr perovskite solar cells with efficient energy transfer to increase the solar cell photocurrent

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35525-35527 ◽  
Author(s):  
Maria Méndez ◽  
Emilio Palomares
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Dual Use ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Type Contact

We investigate the dual use of tris(8-hydroxyquinolinato)aluminium, known as Alq3, as selective contact for electrons and, moreover, as fluorescence emitting layer to increase the photocurrent of perovskite solar cells.

scholarly journals Analytical Study of the Electrical Output Characteristics of c-Si Solar Cells by Cut and Shading Phenomena

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3397 ◽  
Author(s):  
Jong Lim ◽  
Woo Shin ◽  
Hyemi Hwang ◽  
Young-Chul Ju ◽  
Suk Ko ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Crystalline Silicon ◽  
Short Circuit ◽  
Incident Light ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Si Solar Cell ◽  
Si Solar Cells ◽  
Electrical Output

Cut solar cells have received considerable attention recently as they can reduce electrical output degradation when the c-Si solar cells (crystalline-silicon solar cells) are shaded. Cut c-Si solar cells have a lower short-circuit current than normal solar cells and the decrease in short-circuit currents is similar to the shading effect of c-Si solar cells. However, the results of this study’s experiment show that the shadow effect of a c-Si solar cell reduces the V o c (open circuit voltage) in the c-Si solar cell but the V o c does not change when the c-Si solar cell is cut because the amount of incident light does not change. In this paper, the limitations of the electrical power analysis of the cut solar cells were identified when only photo current was considered and the analysis of the electric output of the cut c-Si solar cells was interpreted with a method different from that used in previous analyses. Electrical output was measured when the shaded and cut rates of c-Si solar cells were increased from 0% to 25, 50 and 75%, and a new theoretical model was compared with the experimental results using MATLAB.

scholarly journals Water-soluble ZnSe/ZnS:Mn/ZnS quantum dots convert UV to visible light for improved Si solar cell efficiency

2021 ◽  
Author(s):  
Hisaaki Nishimura ◽  
Takaya Maekawa ◽  
Kazushi Enomoto ◽  
Naoteru Shigekawa ◽  
Tomomi Takagi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Visible Light ◽  
Solar Spectrum ◽  
Water Soluble ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Si Solar Cells

The sensitivity of Si solar cells to the UV portion of the solar spectrum is low, and must be increased to further improve their efficiencies.

Recent Advances in A-Si Solar Cell Technology in Japan

1986 ◽  
Vol 70 ◽  
Author(s):  
Y. Kuwano
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Single Junction ◽  
Si Solar Cell ◽  
Si Solar Cells ◽  
Recent Advances ◽  
Cell Structures ◽  
Cell Stability ◽  
Terminal Structure ◽  
Conversion Efficiencies

ABSTRACTRecent advances in a-Si solar cells in Japan are reviewed. Improvements in single-junction and multi-junction solar cells are described in three main points, namely, fabrication methods, materials, and cell structures. Recently, a conversion efficiency of 11.7% was obtained for a single-junction structure. For an a-Si/poly-Si stacked structure and an a-Si/(CdS/CdTe) 4 terminal structure, conversion efficiencies of more than 13% were achieved.Then recent advances in the prevention of the light induced degradation of a-Si solar cells is mentioned. Several methods which can improve the a-Si solar cell stability are described.Finally, the present status of the industrialization of a-Si solar cells and some of the latest applications are described together with their propects.

Space Radiation Effects in Advanced Solar Cell Materials and Devices

2001 ◽  
Vol 692 ◽  
Author(s):  
R. J. Walters ◽  
G. P. Summers
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Radiation Effects ◽  
Deep Level ◽  
Spectral Response ◽  
Cell Structure ◽  
Electrical Performance ◽  
Internal Cell ◽  
Particle Irradiation ◽  
Transient Spectroscopy

AbstractAn investigation of the physical mechanisms governing the response of III-V based solar cells to particle irradiation is presented. The effect of particle irradiation on single and multijunction solar cells is studied through current vs. voltage, spectral response, and deep level transient spectroscopy measurements. The basic radiation response mechanisms are identified, and their effects on the solar cell electrical performance are described. In particular, a detailed analysis of multijunction InxGa1-xP/InyGa1-yAs/Ge devices is presented. The MJ cell response is found to be more strongly affected by the internal cell structure than by the In content.

Amorphous Silicon Alloy Materials and Solar Cells Near the Threshold of Microcrystallinity

1999 ◽  
Vol 557 ◽  
Author(s):  
J. Yang ◽  
S. Guha
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Triple Junction ◽  
High Efficiency ◽  
Spectral Response ◽  
High Quality ◽  
Silicon Alloys ◽  
Solar Cell Performance ◽  
Hydrogen Dilution

AbstractOne of the most effective techniques used to obtain high quality amorphous silicon alloys is the use of hydrogen dilution during film growth. The resultant material exhibits a more ordered microstructure and gives rise to high efficiency solar cells. As the hydrogen dilution increases, however, a threshold is reached, beyond which microcrystallites begin to form rapidly. In this paper, we review some of the interesting features associated with the thin film materials obtained from various hydrogen dilutions. They include the observation of linear-like objects in the TEM micrograph, a shift of the principal Si TO band in the Raman spectrum, a sharp, low temperature peak in the H2 evolution spectrum, a shift of the wagging mode in the IR spectrum, and a narrowing of the Si (111) peak in the X-ray diffraction pattern. These spectroscopic tools have allowed us to optimize deposition conditions to near the threshold of microcrystallinity and obtain desired high quality materials. Incorporation of the improved materials into device configuration has significantly enhanced the solar cell performance. Using a spectral-splitting, triple-junction configuration, the spectral response of a typical high efficiency device spans from below 350 nm to beyond 950 nm with a peak quantum efficiency exceeding 90%; the triple stack generates a photocurrent of 27 mA/cm2. This paper describes the effect of the improved materials on various solar cell structures, including a 13% active-area, stable triple-junction device.

Enhanced photovoltaic characteristics of MoS2/Si hybrid solar cells by metal Pd chemical doping

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1346-1350 ◽  
Author(s):  
L. Z. Hao ◽  
Y. J. Liu ◽  
W. Gao ◽  
Y. M. Liu ◽  
Z. D. Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Chemical Doping ◽  
Hybrid Solar Cells ◽  
Si Solar Cell ◽  
Photovoltaic Characteristics

MoS2/Si hybrid solar cells are fabricated and the device performances are improved via Pd chemical doping. Due to the incorporation of the Pd atoms, the photovoltaic characteristics of the fabricated Pd:MoS2/Si solar cell are enhanced significantly.

Efficient Thin-Film Polycrystalline-Silicon Solar Cells Based on Aluminium-Induced Crystallization

2007 ◽  
Vol 989 ◽  
Author(s):  
Ivan Gordon ◽  
Lode Carnel ◽  
Dries Van Gestel ◽  
Guy Beaucarne ◽  
Jef Poortmans
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Current Density ◽  
Polycrystalline Silicon ◽  
Cell Process ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Si Solar Cells ◽  
Induced Crystallization

AbstractEfficient thin-film polycrystalline-silicon (pc-Si) solar cells on inexpensive substrates could lower the price of photovoltaic electricity substantially. At the MRS conference in 2006, we presented a pc-Si solar cell with an efficiency of 5.9% that had an absorber layer made by aluminum-induced crystallization (AIC) of amorphous silicon followed by high-temperature epitaxial thickening. The efficiency of this cell was mainly limited by the current density. To obtain higher efficiencies, we therefore need to implement an effective light trapping scheme in our pc-Si solar cell process. In this work, we describe how we recently enhanced the current density and efficiency of our cells. We achieved a cell efficiency of 8.0% for pc-Si cells in substrate configuration. Our cell process is based on pc-Si layers made by AIC and thermal CVD on smoothened alumina substrates. The cells are in substrate configuration with deposited a-Si heterojunction emitters and interdigitated top contacts. The front surface of the cells is plasma textured which leads to an increase in current density. The current density is further enhanced by minimizing the back surface field thickness of the cells to reduce the light loss in this layer. Our present pc-Si solar cell efficiency together with the fast progression that we have made over the last few years indicate the large potential of pc-Si solar cells based on the AIC seed layer approach.

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