초록 |
Here we show that fluorinated azide which is employed as a functional additive of photomultiplication-type organic photodiode (PM-OPD) can not only enhance an operational stability by freezing the morphology consisting of matrix polymer/localized acceptor but also stabilize trapped electron state so that photomultiplication mechanism can be further accelerated. The resulting OPD rendered maximum EQE over 500,000% and 370,000% for bottom and top illumination, respectively. Moreover, the OPD shows stable performances of continuous operation and minimized performance degradation even after damp heat test. To fully visualize advantages of the suggested semi-transparent, high EQE and top-illuminated OPD, reflection-type fingerprint platform consisting of 1 OPD-1 oxide field effect transistor CMOS backplane (300 ppi) is designed. Successful recognition of one of the author’s fingerprint is demonstrated, showing the feasibility of the suggested PM-OPD for sensing weak light intensity. |