Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5352816 | Applied Surface Science | 2017 | 24 Pages |
Abstract
The cyclic voltammetry data revealed that the saturated photocurrent density increased with increasing number of QW pairs; the photocurrent density of MQW5 was twice that of an nGaN reference. However, in the chronoamperometry measurement of the photoanode stability, MQWs with 3 QWs displayed the highest photocurrent stability, although the saturated photocurrent density was highest for MQW5. This was also confirmed by field-emission scanning electron microscopy of the surface morphology after PEC measurements. The stability and photocurrent density may be attributed to the quality of crystallinity of the MQWs.
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Authors
Hyojung Bae, Jun-Beom Park, Katsushi Fujii, Hyo-Jong Lee, Sang-Hyun Lee, Sang-Wan Ryu, June Key Lee, Jun-Seok Ha,