Temperature dependence of GaSb and AlGaSb solar cells

Vadiee, Ehsan; Fang, Yi; Zhang, Chaomin; Fischer, Alec M.; Williams, J.R.; Renteria, Emma J.; Balakrishnan, Ganesh; Honsberg, Christiana B.

doi:10.1016/j.cap.2018.03.007

Cited by 26 publications

(5 citation statements)

References 33 publications

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“…The values of R S , R SH and J SC increases slightly with an increase in temperature but does not affect the efficiency of the cell much [77]. From the other side, J 0 is a material dependent factor, which changes drastically with increase in temperature, affecting the V OC value and, eventually, the PV conversion efficiency [77][78][79][80]:…”

Section: Resultsmentioning

confidence: 99%

Non-Curing Thermal Interface Materials with Graphene Fillers for Thermal Management of Concentrated Photovoltaic Solar Cells

Mahadevan

Naghibi

Kargar

et al. 2019

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Temperature rise in multi-junction solar cells reduces their efficiency and shortens their lifetime. We report the results of the feasibility study of passive thermal management of concentrated multi-junction solar cells with the non-curing graphene-enhanced thermal interface materials. Using an inexpensive, scalable technique, graphene and few-layer graphene fillers were incorporated in the non-curing mineral oil matrix, with the filler concentration of up to 40 wt% and applied as the thermal interface material between the solar cell and the heat sink. The performance parameters of the solar cells were tested using an industry-standard solar simulator with concentrated light illumination at 70× and 200× suns. It was found that the non-curing graphene-enhanced thermal interface material substantially reduces the temperature rise in the solar cell and improves its open-circuit voltage. The decrease in the maximum temperature rise enhances the solar cell performance compared to that with the commercial non-cured thermal interface material. The obtained results are important for the development of the thermal management technologies for the next generation of photovoltaic solar cells.

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Section: Resultsmentioning

confidence: 99%

Non-Curing Thermal Interface Materials with Graphene Fillers for Thermal Management of Concentrated Photovoltaic Solar Cells

Mahadevan

Naghibi

Kargar

et al. 2019

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“…Therefore, the carbonized ceria emitter of 2 g of citric acid was expected to exhibit a 6% decrease in power density, relative to the tungsten emitter (Figure S6). 41 Note that the absolute power density values of TPV systems are strongly influenced by the quality of the photovoltaic cells in use. Hence, a comparison of the TPV performance is permitted during the same TPV experiments.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

High-Temperature Carbonized Ceria Thermophotovoltaic Emitter beyond Tungsten

Cho

Jeong

et al. 2021

ACS Appl. Mater. Interfaces

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Thermophotovoltaics (TPVs) require emitters with a regulated radiation spectrum tailored to the spectral response of integrated photovoltaic cells. Such spectrally engineered emitters developed thus far are structurally too complicated to be scalable, are thermally unstable, or lack reliability in terms of temperature cycling. Herein, we report wafer-scale, thermal-stress-free, and wavelength-selective emitters that operate for high-temperature TPVs equipped with GaSb photovoltaic cells. One inch crystalline ceria wafers were prepared by sequentially pressing and annealing the pellets of ceria nanoparticles. The direct pyrolysis of citric acid mixed with ceria nanoparticles created agglomerated, pyrolytic carbon and ceria microscale dots, thus forming a carbonized film strongly adhering to a wafer surface. Depending on the thickness of the carbonized film that was readily tuned based on the amount of citric acid used in the reaction, the carbonized ceria emitter behaved as a tungsten-like emitter, a graphite-like emitter, or their hybrid in terms of the absorptivity spectrum. A properly synthesized carbonized ceria emitter produced a power density of 0.63 W/cm2 from the TPV system working at 900 °C, providing 13 and 9% enhancements compared to tungsten and graphite emitters, respectively. Furthermore, only the carbonized ceria emitter preserved its pristine absorptivity spectrum after a 48 h heating test at 1000 °C. The scalable and facile fabrication of thermostable emitters with a structured spectrum will prompt the emergence of thermal emission-harnessed energy devices.

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“…The 'group III-V compounds' are often alloys of elements in the IIIrd and Vth columns of the periodic table. The band gaps of the binary 'Group III-V compounds,' such as GaAs and InP, are of the order of 1.4 eV and are conveniently matched with the solar spectrum to absorb sunlight and can be further tuned to form ternary or quaternary compounds like Al x Ga 1−x As or In x Ga 1−x As y P 1−y by alloying with materials such as Al or Sb [55,56]. Researchers are investigating a variety of 'Group III-V compound' tandem solar cell architectures to increase efficiency while lowering the cost of these devices.…”

Section: 'Group Iii-v Compound' Semiconductor Tandem Solar Cells Arch...mentioning

confidence: 99%

“…The wavelengths of solar radiation absorbed by solar cell materials depend on the energy band gap of the materials. By combining various group III and group V elements, a wide range of bandgap values from 0.7 eV (for Ge) to 3.42 eV (for InGaN) can be achieved, maximizing the absorption of solar radiation [55,56,69,70].…”

Section: Design Process For Iii-v Compound Semiconductor Solar Cellsmentioning

confidence: 99%

Advancing efficiency: comprehensive strategies for minimizing optical and electrical losses in group III-V compound tandem solar cells for future photovoltaic technology

Soley,

Verma,

Khatri

et al. 2024

Eng. Res. Express

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Global energy consumption is rising, and fossil resources are dwindling, driving demand for clean, affordable energy. Solar power is the most promising alternative energy source and can meet future energy needs. In terrestrial photovoltaics, low-cost Silicon solar cells dominate. However, as the single junction silicon solar cells are approaching their highest achievable efficiency of 30%, high-efficiency, “group III-V Compound” semiconductor tandem solar cells are being considered as an alternative energy source. The absorption capacity of the wide range of solar radiation photons enables them to achieve high efficiency. However, further improvement in efficiency is constrained due to the various loss mechanisms that occur during the physical process of converting light to electrical energy in “group III-V compound” tandem solar cells. Extensive research is being conducted to develop solution approaches to minimize the loss mechanisms in order to improve efficiency. Although many published review articles have studied the research progress of “group III-V compound” solar cells based on fabrication techniques, applications, status, and challenges, there is no article mentioning a comprehensive and comparative study of strategies employed by researchers to enhance efficiency in “group III-V compounds” tandem solar cells considering loss mechanisms. The present study focuses on discussing the fundamental losses in “group III-V compounds” tandem solar cells and various strategies employed by researchers to reduce optical and electrical losses to improve the efficiency of these devices so that they may be employed in terrestrial applications.

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Temperature dependence of GaSb and AlGaSb solar cells

Cited by 26 publications

References 33 publications

Non-Curing Thermal Interface Materials with Graphene Fillers for Thermal Management of Concentrated Photovoltaic Solar Cells

Non-Curing Thermal Interface Materials with Graphene Fillers for Thermal Management of Concentrated Photovoltaic Solar Cells

High-Temperature Carbonized Ceria Thermophotovoltaic Emitter beyond Tungsten

Advancing efficiency: comprehensive strategies for minimizing optical and electrical losses in group III-V compound tandem solar cells for future photovoltaic technology

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