Very high open-circuit voltage ultraviolet photovoltaic diode with its application in optical encoder field

Guang Zhang; Wenlian Li; Bei Chu; Fei Yan; Jianzhuo Zhu; Yiren Chen
February 2010
Applied Physics Letters;2/15/2010, Vol. 96 Issue 7, p073301
Academic Journal
We demonstrate a very high voltage based organic photovoltaic (PV) diode by stacking two ultraviolet (UV) sensitized organic PV diodes. It shows an open-circuit voltage (Voc) of 4.34 V under 365 nm UV irradiation with intensity of 2 mW/cm2. Due to the especially high Voc the PV diode device could be integrated in electronic logic device, as a result a high or a low potential states can be harvested directly under the UV irradiation or not, respectively. The difference between high and low potential states is great and the temporal response is fast, which make it an attractive and promising candidate in application of optical encoder.


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