Directly integrated mixed‐dimensional van der Waals graphene/perovskite heterojunction for fast photodetection
Xiangshun Geng,
Peigen Zhang,
Jun Ren,
Guan‐Hua Dun,
Yuanyuan Li,
Jialun Jin,
Chaolun Wang,
Xing Wu,
Dan Xie,
He Tian,
Yi Yang,
Tian‐Ling Ren
Affiliations
Xiangshun Geng
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Peigen Zhang
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Jun Ren
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Guan‐Hua Dun
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Yuanyuan Li
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Jialun Jin
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Chaolun Wang
Shanghai Key Laboratory of Multidimensional Information Processing, School of Communication and Electronic Engineering East China Normal University Shanghai People's Republic of China
Xing Wu
Shanghai Key Laboratory of Multidimensional Information Processing, School of Communication and Electronic Engineering East China Normal University Shanghai People's Republic of China
Dan Xie
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
He Tian
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Yi Yang
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Tian‐Ling Ren
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China
Abstract Mixed‐dimensional (2D/3D) van der Waals (vdW) heterostructures made with complementary materials hold a lot of promise in the field of optoelectronic devices. Beyond simple mechanical stacking, directly growing the single‐crystal perovskite on 2D materials to construct a high‐quality vdW heterojunction can better promote carrier transport. In this work, a monolithic integrated graphene/perovskite heterojunction device is fabricated by directly growing a single‐crystal hybrid perovskite on monolayer graphene. Due to the strong interface coupling, the hybrid device achieves self‐powering behavior and exhibits prominent photoresponse properties with a fast response speed of up to 2.05 μs. Moreover, the responsivity and detectivity can be boosted to up to 10.41 A W−1 and 4.65 × 1012 Jones under the actuation of −3 V bias. This technique not only improves the device performance, but also provides an effective guideline for the development of next‐generation directly integrated vdW optoelectronic devices.
