In this work, we demonstrate high performance photodetectors based on organometal halide
perovskite materials in a “conventional” device architecture. Due to the excellent intrinsic
optical and electrical properties of perovskite materials, high photoresponsivities from 375
nm to 800 nm were obtained. By additionally modifying a sol–gel processed TiO2 compact
layer with a solution-processed [6, 6]-phenyl-C61-butyric acid methyl ester (PC61BM), the
performance of the perovskite photodetectors is further improved through simultaneously …

(57) ABSTRACT A photodetector includes an active layer formed of an inorganic/organic
hybrid perovskite material. Such as orga nometal halide perovskites. The perovskite hybrid
photode tector provides low dark-current densities and high external quantum efficiencies,
resulting in a photodetector with enhanced photoresponsivity and detectivity. Advanta
geously, the perovskite hybrid photodetector may be pre pared by Solution processing, and
is compatible with large scale manufacturing techniques.