Browsing by Author "Shih, Cheng-Lun"

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Positioning Effect of Type-II GaSb/GaAs Quantum Ring Layer on Solar Cell Performances
(2015)
Hsu, Shun-Chieh
;
Chen, Yin-Han
;
Chen, Hsuan-An
;
Lin, Shih-Yen
;
Shen, Tien-Lin
In this work, we demonstrate the positioning effect of the type-II quantum ring (QR) on the solar cell efficiencies. The QR layer was placed in either p-type or n-type region to test its effect on the performance. Under one Sun condition, the one with p-type QR layer has better efficiency and open-circuit voltage. But this advantage loses quickly when the sunlight is concentrated over 20 times. From the concentrated sunlight measurement, the sample with QR layer in the n-type region can sustain the V-oc reduction until 80 Suns.