A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Highly Efficient Van Der Waals Heterojunction on Graphdiyne toward the High‐Performance Photodetector
Graphdiyne (GDY), a new 2D material, has recently proven excellent performance in photodetector applications due to its direct bandgap and high mobility. Different from the zero‐gap of graphene, these preeminent properties made GDY emerge as a rising star for solving the bottleneck of graphene‐based inefficient heterojunction. Herein, a highly effective graphdiyne/molybdenum (GDY/MoS2) type‐II heterojunction in a charge separation is reported toward a high‐performance photodetector. Characterized by robust electron repulsion of alkyne‐rich skeleton, the GDY based junction facilitates the effective electron–hole pairs separation and transfer. This results in significant suppression of Auger recombination up to six times at the GDY/MoS2 interface compared with the pristine materials owing to an ultrafast hot hole transfer from MoS2 to GDY. GDY/MoS2 device demonstrates notable photovoltaic behavior with a short‐circuit current of −1.3 × 10−5 A and a large open‐circuit voltage of 0.23 V under visible irradiation. As a positive‐charge‐attracting magnet, under illumination, alkyne‐rich framework induces positive photogating effect on the neighboring MoS2, further enhancing photocurrent. Consequently, the device exhibits broadband detection (453–1064 nm) with a maximum responsivity of 78.5 A W−1 and a high speed of 50 µs. Results open up a new promising strategy using GDY toward effective junction for future optoelectronic applications.
Highly Efficient Van Der Waals Heterojunction on Graphdiyne toward the High‐Performance Photodetector
Graphdiyne (GDY), a new 2D material, has recently proven excellent performance in photodetector applications due to its direct bandgap and high mobility. Different from the zero‐gap of graphene, these preeminent properties made GDY emerge as a rising star for solving the bottleneck of graphene‐based inefficient heterojunction. Herein, a highly effective graphdiyne/molybdenum (GDY/MoS2) type‐II heterojunction in a charge separation is reported toward a high‐performance photodetector. Characterized by robust electron repulsion of alkyne‐rich skeleton, the GDY based junction facilitates the effective electron–hole pairs separation and transfer. This results in significant suppression of Auger recombination up to six times at the GDY/MoS2 interface compared with the pristine materials owing to an ultrafast hot hole transfer from MoS2 to GDY. GDY/MoS2 device demonstrates notable photovoltaic behavior with a short‐circuit current of −1.3 × 10−5 A and a large open‐circuit voltage of 0.23 V under visible irradiation. As a positive‐charge‐attracting magnet, under illumination, alkyne‐rich framework induces positive photogating effect on the neighboring MoS2, further enhancing photocurrent. Consequently, the device exhibits broadband detection (453–1064 nm) with a maximum responsivity of 78.5 A W−1 and a high speed of 50 µs. Results open up a new promising strategy using GDY toward effective junction for future optoelectronic applications.
Highly Efficient Van Der Waals Heterojunction on Graphdiyne toward the High‐Performance Photodetector
Do, Dinh Phuc (author) / Hong, Chengyun (author) / Bui, Viet Q (author) / Pham, Thi Hue (author) / Seo, Sohyeon (author) / Do, Van Dam (author) / Phan, Thanh Luan (author) / Tran, Kim My (author) / Haldar, Surajit (author) / Ahn, Byung‐wook (author)
Advanced Science ; 10
2023-09-01
10 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2018
Direct Charge Trapping Multilevel Memory with Graphdiyne/MoS2 Van der Waals Heterostructure
| Wiley | 2021
Nanostructured-NiO/Si heterojunction photodetector
| British Library Online Contents | 2017
Nanostructured-NiO/Si heterojunction photodetector
| British Library Online Contents | 2017
Nanostructured-NiO/Si heterojunction photodetector
| British Library Online Contents | 2017