Zero Dimensional-Two Dimensional Hybrid Photodetectors Using Multilayer MoS 2 and Lead Halide Perovskite Quantum Dots with a Tunable Bandgap.

We report high-performance 0D-2D hybrid photodetectors integrated with tunable band gap perovskite (CsPbI 3 , Cs X FA X -1 PbI 3 , and FAPbI 3 ) quantum dots and MOCVD-grown bilayer MoS 2 . In our hybrid structure, the lead halide PQDs can be utilized as an absorbing layer of light of specific wavelengths and transfer the photogenerated carriers to the MoS 2 transport layer. With tunable wavelength lead halide PQDs, the 0D-2D hybrid photodetector shows a high responsivity up to 10 7 AW -1 and high specific detectivity exceeding 10 13 Jones due to the difference in the built-in potential between PQDs and multilayer MoS 2 layers. This work proposes the possibility of fabricating high-performance photodetectors by hybridizing PQDs of various band gaps with 2D materials.