An absence of improvement in the dark current was observed.However we did observe an improvement in the material quality (low ideality factor 1.75 and series resistance 0.3k ) for forward bias.

• 逆偏压下暗电流没有改善，但在顺偏压下，观察到材料品质的改善（低的理想因子值约1.；75与串联电阻300欧姆）。