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Most Promising Solar Technologies
Published in Anco S. Blazev, Solar Technologies for the 21st Century, 2021
A variation of this technology is the Indium gallium phosphide (InGaP), also called gallium indium phosphide (GaInP), which is a hybrid semiconductor, composed of indium, gallium and phosphorus.
Outdoor degradation evaluation of multi-junction solar cell for four Fresnel concentrated photovoltaic systems
Published in International Journal of Sustainable Energy, 2022
K. Mahalakshmi, K. S. Reddy, A. Subrahmanyam
A Fresnel lens-based CPV system, consisting of triple-junction solar cells, with four secondary optical elements was considered for this study. The point focus Fresnel lens made of PMMA (Poly-methyl metha acrylate) has a geometrical concentration ratio of 900 suns at its focal length of 340 mm. Each InGaP/InGaAs/Ge triple-junction solar cell has the dimension of . The Fresnel CPV system considered for this study is shown in Figure 1. Four different secondary concentrator profiles (the best performing simple profiles based on literature survey) of reflective and refractive type but similar physical structures were chosen for analysis. The reflective CPC secondary was designed with an acceptance angle of 23.8, while the refractive CPC was designed with an inner acceptance angle of 15 (calculated based on acceptance angle and refractive index) but trimmed to half of its height to reduce the material requirement without compromising uniformity in flux distribution.
Effect of space radiation on CTJ new version multijunction solar cells
Published in Radiation Effects and Defects in Solids, 2021
B. R. Uma, Sheeja Krishnan, V. Radhakrishna, Roberta Campesato
In view of this, a new version of multijunction solar cell has been developed having high efficiency, radiation tolerance and low cost with the following features (6). It is a TJ solar cell with InGaP/GaAs/Ge subcells.Efficiency 28% in AM0, 25°C, ∼2% lower than the present state-of-the-art multi junction solar cells (6).High radiation resistance similar to typical III–V multi junction solar cells.Cost about 30–50% less than the standard TJ solar cells.
Application of InGaP space solar cells for a radiation dosimetry at high dose rates environment of Fukushima Daiichi nuclear power plant
Published in Journal of Nuclear Science and Technology, 2019
Yasuki Okuno, Nariaki Okubo, Mitsuru Imaizumi
Before, during, and after the irradiation, the output current of the solar cell was measured using the same DC source/monitor used for the solar cells analysis. The sample was connected to the DC source/monitor using the two-terminal connection method shown in Figure 4. The radiation-induced current flowing in the short circuit was measured. The measurement was set to 200 ms for 4 Power Line Cycle (PLC) (1PLC: 50 Hz). The γ-rays irradiation was conducted at room temperature. Figure 5 shows the current behavior of the InGaP solar cell during the irradiation test. The induced current (JI) of the solar cell was analyzed as the amount of current after deducting the steady current (JS) from the output current during the irradiation (Jirr). In order to prevent detection of photocurrent of the solar cell under measuring, the light was turned off in the γ-rays irradiation room and the JS was suppressed to few nA.