Tunable Contacts of Bi2O2Se Nanosheets MSM Photodetectors by Metal‐Assisted Transfer Approach for Self‐Powered Near‐Infrared Photodetection
Guangcan Wang,
Fengjing Liu,
Ruichang Chen
et al.
Abstract:Owing to the Fermi pinning effect arose in the metal electrodes deposition process, metal–semiconductor contact is always independent on the work function, which challenges the next‐generation optoelectronic devices. In this work, a metal‐assisted transfer approach is developed to transfer Bi2O2Se nanosheets onto the pre‐deposited metal electrodes, benefiting to the tunable metal–semiconductor contact. The success in Bi2O2Se nanosheets transfer is contributed to the stronger van der Waals adhesion of metal ele… Show more
“…Compared with conventional metal deposition techniques, the vdW metal-MoS 2 interface effectively avoids the associated chemical disorder and defect-induced gap states. 25,26 Sequentially, we chose oxygen plasma to trigger a metallic 1T phase transition on the entire MoS 2 , as shown in Fig. 1(a).…”
The microscale structural phase transition in TMDs from 2H to 1T or 1T' phases offer a distinct approach for modulating the electronic properties of these materials. Although phase engineering for...
“…Compared with conventional metal deposition techniques, the vdW metal-MoS 2 interface effectively avoids the associated chemical disorder and defect-induced gap states. 25,26 Sequentially, we chose oxygen plasma to trigger a metallic 1T phase transition on the entire MoS 2 , as shown in Fig. 1(a).…”
The microscale structural phase transition in TMDs from 2H to 1T or 1T' phases offer a distinct approach for modulating the electronic properties of these materials. Although phase engineering for...
“…At zero bias, the rise/fall time is extracted to be 120/137 μs. The fast response speed originates from the built-in electric field at the depletion region that can quickly separate the photogenerated carriers . By applying a reverse bias, the junction capacitance can be reduced, further increasing the response speed.…”
We fabricated an efficient C8-DPP-BP/G photodetector with prompt response to UV-near IR radiation through a dual-benefit strategy, in situ synthesis and crystallization using a simple one-step annealing technique.
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