Here, a hybrid perovskite-organic photodetector was fabricated by integrating CsPbBr3 nanocrystals (NCs) with [6,6]-phenyl C-71 butyric acid methyl ester (PC71BM), exhibiting remarkable optoelectronic properties in terms of photoresponsivity (1.72 A/W), detectivity (1.76 x 10(7) Jones), external quantum efficiency (EQE) (530%) under the illumination of 405 nm laser, and photoresponse time is shorter than 0.1 ms due to the assistance of heterojunction on the separation of photoexcitons. (C) 2018 Elsevier B.V. All rights reserved.