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Effects of proton irradiation on $$n^{+}p$$ InGaP solar Cells

$$n^{+}p$$ InGaP太陽電池の陽子線照射効果

Dharmarasu, N.*; Khan, A.*; 山口 真史*; 高本 達也*; 大島 武; 伊藤 久義; 今泉 充*; 松田 純夫*

Dharmarasu, N.*; Khan, A.*; Yamaguchi, Masafumi*; Takamoto, Tatsuya*; Oshima, Takeshi; Ito, Hisayoshi; Imaizumi, Mitsuru*; Matsuda, Sumio*

InGaP単接合及びInGaP/GaAs二接合太陽電池へ3MeV陽子線照射を行い特性劣化を調べた。InGaP単接合の劣化は二接合に比べ少ないことが明らかになった。分光感度測定を行ったところ、長波長側の劣化が観測され、GaAsサブセルの劣化が二接合太陽電池の劣化へ寄与しているという結果を得た。少数キャリア拡散長の損傷係数を見積もったところ、InGaPでは7.9$$times$$10$$^{-5}$$,GaAsでは1.6$$times$$10$$^{-4}$$あった。また、これら損傷係数の値は、1MeV電子線照射の場合と比べ、それぞれ580,280倍大きいことが明らかになった。

3MeV proton irradiation effects on InGaP single junction and InGaP/GaAs two junction cells were studied. The degradation of electrocal properties for InGaP cells was smaller than that for InGaP/GaAs cells. The results of the measurement of spectral response showed the large degradation in long wavelength. This indicates that GaAs cell degrades. The Damage coefficient of minority carrier diffusion length was estimated to be 7.9$$times$$10$$^{-5}$$ for InGaP and 1.6$$times$$10$$^{-4}$$ for GaAs. These values of the damage coefficient for InGaP and GaAs are 580 times and 280 times larger than those for InGaP and GaAs irradiated with 1MeV electrons.

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パーセンタイル:66.06

分野:Physics, Applied

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