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利用导电原子力显微镜检测光电转换材料光电流信号的方法
Authors
卢焕明
李勇
+3 more
陈国新
魏安祥
魏艳萍
Publication date
29 March 2017
Publisher
Abstract
本发明提供了一种利用导电原子力显微镜检测光电转换材料光电流信号的方法。采用锁相放大器,锁相放大器提供交变的驱动电压用以驱动光源发光照射材料样品,由于光电转换效应样品产生光电流,导电探针接触样品探测该光电流信号并将其传输至电流放大器得到电流放大信号,电流放大信号再输入锁相放大器,使锁相放大的参考信号与驱动电压具有相同频率,从而实现光电流信号的锁相放大,提高光电流检测的灵敏度和信噪比
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Last time updated on 22/01/2018