Hybrid Bilayer WSe2 -CH3 NH3 PbI3 Organolead Halide Perovskite as a High-Performance Photodetector.
A high-performance 2D photodetector based on a bilayer structure comprising a WSe2 monolayer and CH3 NH3 PbI3 organolead halide perovskite is reported. High performance is realized by modification of the WSe2 monolayer with laser healing and perovskite functionalization. After modification, the output of the device was three orders of magnitude better than the pristine device; the performance is superior to that of most of the 2D photodetectors based on transition-metal-dichalcogenides (TMDs). This result indicates that combinatory TMDs-halide perovskite hybrids can be promising building blocks in optoelectronics.
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore.|Center for Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore.
Junpeng
J
Lu
Center for Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore.
Alexandra
A
Carvalho
Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way. Innovis, #08-03, Singapore, 138634, Singapore.
Hongwei
H
Liu
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore.
Sharon Xiaodai
SX
Lim
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore. phycastr@nus.edu.sg.|Center for Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore. phycastr@nus.edu.sg.
Antonio H
AH
Castro Neto
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore. physowch@nus.edu.sg.|Center for Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore. physowch@nus.edu.sg.
Chorng Haur
CH
Sow
2D transition-metal-dichalcogenides; laser healing; optoelectronic devices; perovskite