scholarly journals High‐efficiency single‐junction p‐i‐n GaAs solar cell on roll‐to‐roll epi‐ready flexible metal foils for low‐cost photovoltaics

2020 ◽  
Vol 28 (11) ◽  
pp. 1107-1119
Author(s):  
Devendra Khatiwada ◽  
Carlos A. Favela ◽  
Sicong Sun ◽  
Chuanze Zhang ◽  
Sahil Sharma ◽  
...  
Keyword(s):  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Single Junction ◽  
Metal Foils ◽  
Roll To Roll ◽  
Flexible Metal

Flexible GaAs solar cells on roll-to-roll processed epitaxial Ge films on metal foils: a route towards low-cost and high-performance III–V photovoltaics

2019 ◽  
Vol 12 (2) ◽  
pp. 756-766 ◽  
Author(s):  
P. Dutta ◽  
M. Rathi ◽  
D. Khatiwada ◽  
S. Sun ◽  
Y. Yao ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Low Cost ◽  
Single Junction ◽  
Metal Foils ◽  
Roll To Roll

Single-junction GaAs solar cells were developed on metal foils, laying the foundation for scalable manufacturing of low-cost, lightweight and high-efficiency flexible III–V solar cells.

Passivation Studies on Single-Junction GaAs Thin Film Solar Cells on Flexible Metal Tapes for Low-Cost Photovoltaics

2019 ◽  
Vol 2 (5) ◽  
pp. 3114-3119 ◽  
Author(s):  
Devendra Khatiwada ◽  
Monika Rathi ◽  
Pavel Dutta ◽  
Sicong Sun ◽  
Carlos Favela ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Low Cost ◽  
Thin Film Solar Cells ◽  
Single Junction ◽  
Flexible Metal

Toward 20% Efficiency With a-Si // poly-Si Tandem Solar Cell

1992 ◽  
Vol 258 ◽  
Author(s):  
M. Yoshimi ◽  
W. Ma ◽  
T. Horiuchi ◽  
C. C. Lim ◽  
S. C. De ◽  
...  
Keyword(s):  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Cell Structure ◽  
Experimental Investigations ◽  
Total Efficiency ◽  
Tandem Solar Cell ◽  
Structure Variation ◽  
Technical Data ◽  
Bottom Cell

ABSTRACTA series of experimental investigations has been made on the a-Si // poly-Si tandem solar cell which is one of the most promised candidate of high cost-performance photovoltaic cell, e.g., high efficiency, low cost with almost no light induced degradation. Employing high conductivity with wide optical band gap p type microcrystalline SiC (μ-SiC) as a window material together with a-SiC as an interface buffer layer and also n type μc-Si as a back ohmic contact layer in the poly-Si based bottom cell, the conversion efficiency of 17.2 % has been obtained. Combining an optically transparent a-Si p-i-n cell as a top cell with an optical coupler between the top and the poly-Si bottom cell, a total efficiency of 20.3 % has been obtained so far on the four-terminal stacked mode structure. A systematic technical data for the optimization of cell structure variation on the developed tandem solar cells are presented and further possibility to improving the performance are discussed.

scholarly journals III–V Multijunction Solar Cell Integration with Silicon: Present Status, Challenges and Future Outlook

2014 ◽  
Vol 1 (3-4) ◽  
Author(s):  
Nikhil Jain ◽  
Mantu K. Hudait
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Si Substrate ◽  
Future Outlook ◽  
Si Solar Cells ◽  
Multijunction Solar Cells ◽  
The Future ◽  
Multijunction Solar Cell

AbstractAchieving high-efficiency solar cells and at the same time driving down the cell cost has been among the key objectives for photovoltaic researchers to attain a lower levelized cost of energy (LCOE). While the performance of silicon (Si) based solar cells have almost saturated at an efficiency of ~25%, III–V compound semiconductor based solar cells have steadily shown performance improvement at ~1% (absolute) increase per year, with a recent record efficiency of 44.7%. Integration of such high-efficiency III–V multijunction solar cells on significantly cheaper and large area Si substrate has recently attracted immense interest to address the future LCOE roadmaps by unifying the high-efficiency merits of III–V materials with low-cost and abundance of Si. This review article will discuss the current progress in the development of III–V multijunction solar cell integration onto Si substrate. The current state-of-the-art for III–V-on-Si solar cells along with their theoretical performance projections is presented. Next, the key design criteria and the technical challenges associated with the integration of III–V multijunction solar cells on Si are reviewed. Different technological routes for integrating III–V solar cells on Si substrate through heteroepitaxial integration and via mechanical stacking approach are presented. The key merits and technical challenges for all of the till-date available technologies are summarized. Finally, the prospects, opportunities and future outlook toward further advancing the performance of III–V-on-Si multijunction solar cells are discussed. With the plummeting price of Si solar cells accompanied with the tremendous headroom available for improving the III–V solar cell efficiencies, the future prospects for successful integration of III–V solar cell technology onto Si substrate look very promising to unlock an era of next generation of high-efficiency and low-cost photovoltaics.

A Study of Back Electrode Stacked With Low Cost Reflective Layers For High-Efficiency Thin-Film Silicon Solar Cell

2014 ◽  
Vol 136 (3) ◽  
Author(s):  
Tsung-Wei Chang ◽  
Chao-Te Liu ◽  
Wen-Hsi Lee ◽  
Yu-Jen Hsiao
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
High Performance ◽  
Silicon Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Visible Region ◽  
Particle Diameter ◽  
Solid Content ◽  
Thin Film Silicon

In this study, commercially available white paint is used as a pigmented dielectric reflector (PDR) in the fabrication of a low-cost back electrode stack with an Al-doped ZnO (AZO) layer for thin-film silicon solar cell applications. An initial AZO film was deposited by the radio-frequency magnetron sputtering method. In order to obtain the highest transmittance and lowest resistivity of AZO film, process parameters such as sputtering power and substrate temperature were investigated. The optimal 100-nm-thick AZO film with low resistivity and high transmittance in the visible region are 6.4 × 10−3 Ω·cm and above 80%, respectively. Using glue-like white paint doped withTiO2 nanoparticles as the PDR enhances the external quantum efficiency (EQE) of a microcrystalline silicon absorptive layer owing to the doped white particles improving Fabry–Pérot interference (FPI), which raises reflectance and scattering ability. To realize the cost down requirement, decreasing the noble metal film thickness such as a 30-nm-thick silver reflector film, and a small doping particle diameter (D50 = 135 nm) and a high solid content (20%) lead to FPI improvement and a great EQE, which is attributed to improved scattering and reflectivity because of optimum diameter (Dopt) and thicker PDR film. The results indicate that white paint can be used as a reflector coating in low-cost back-electrode structures in high-performance electronics.

scholarly journals Synthesis and characterization of high-efficiency low-cost solar cell thin film

2019 ◽  
Vol 37 (1) ◽  
pp. 127-135 ◽  
Author(s):  
W. Christopher Immanuel ◽  
S. Paul Mary Deborrah ◽  
S.S.R. Inbanathan ◽  
D. Nithyaa Sree
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Solar Cell ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Uv Spectroscopy ◽  
Low Cost ◽  
Vital Role ◽  
Electrical And Optical Properties ◽  
Group Ii Vi Semiconductors

AbstractPolycrystalline chalcogenide semiconductors play a vital role in solar cell applications due to their outstanding electrical and optical properties. Among the chalcogenide semi-conductors, CdZnS is one kind of such important material for applications in various modern solid state devices such as solar cells, light emitting diode, detector etc. Due to their applications in numerous electro-optic devices, group II-VI semiconductors have been studied extensively. In recent years, major attention has been given to the study of electrical and optical properties of CdZnS thin films. In this work, Cd1−xZnxS thin films were prepared by chemical bath deposition technique. Phase purity and surface morphology properties were analyzed using field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD) studies. Chemical composition was studied using energy dispersive spectrophotometry (EDS). Optical band gap property was investigated using UV-Spectroscopy. Electrical conductivity studies were performed by two probe method and thermoelectric power setup (TEP) to determine the type of the material. This work reports the effect of Zn on structural, electrical, microstructural and optical properties of these films.

Significant texture improvement in single-crystalline-like materials on low-cost flexible metal foils through growth of silver thin films

2019 ◽  
Vol 52 (4) ◽  
pp. 898-902 ◽  
Author(s):  
Yongkuan Li ◽  
Sicong Sun ◽  
Ying Gao ◽  
Yao Yao ◽  
Eduard Galstyan ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Ion Beam ◽  
High Temperature Superconductors ◽  
Single Crystalline ◽  
Metal Foils ◽  
Ion Beam Assisted Deposition ◽  
Out Of Plane ◽  
Flexible Metal ◽  
Ag Film

Low texture spreads of single-crystalline-like materials are critical for high performance of low-cost flexible semiconductors and second-generation high-temperature superconductors based on metal foils. For texture improvement, a single-crystalline-like Ag film is epitaxially grown on an ion-beam-assisted deposition TiN substrate using magnetron sputtering. Ultra-low texture spreads are found in the thin Ag film (∼330 nm), with an out-of-plane texture spread (Δω) of ∼1.03° and an in-plane texture spread (Δϕ) of ∼1.34°. Compared with the texture spreads of the TiN substrate, Δω and Δϕ of the Ag film are reduced by ∼42 and ∼79%, respectively. Applying this Ag buffer, the texture spreads of a single-crystalline-like Ge film are reduced by ∼37% (Δω) and ∼36% (Δϕ). Factors contributing to the texture improvement by Ag are studied using single-crystalline-like Ag films with various thicknesses.

Electrodeposited CuIn(S, Se)2 films for low cost high efficiency solar cell applications: microstructural analysis

2007 ◽  
Author(s):  
V. Izquierdo-Roca ◽  
J. Alvarez-Garcia ◽  
A. Perez-Rodriguez ◽  
L. Calvo-Barrio ◽  
A. Romano-Rodriguez ◽  
...  
Keyword(s):  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Microstructural Analysis
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