DataVXACS Applied Electronic MaterialsPaper
journal article·2021-05-25

2D/3D Hybrid of MoS2/GaN for a High-Performance Broadband Photodetector

Shubhendra Kumar Jain, Mei Xian Low, Patrick D. Taylor, Sherif Abdulkader Tawfik, Michelle J.S. Spencer, Sruthi Kuriakose, Aram Arash, Chenglong Xu, Sharath Sriram, Govind Gupta, Madhu Bhaskaran, Sumeet Walia

ACS Applied Electronic Materials· Volume 3· Issue 5
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Source abstract

Abstract

Narrow spectral sensitivity in materials is one of the crucial challenges to develop high-performance broadband photodetectors. Here, we design a heterostructure of two-dimensional molybdenum disulfide (MoS2) and epitaxial gallium nitride (GaN) films to create an enhanced spectral absorption profile. This combination utilizes complementary optical absorption of MoS2 (visible) and GaN (UV) driven by type II band alignment at their interface to showcase highly sensitive photodetectors spanning across the UV–NIR regime. Concurrently, the heterostructure exhibits significantly enhanced responsivity (order of 104 A/W) and external quantum efficiency that are 500% higher than the bare GaN photodetectors. Given the available scalable synthesis approaches that have now been designed by the research community for both constituent materials, the demonstration of this heterostructure as a broadband photodetector with high figures-of-merit opens opportunities in designing efficient optoelectronic junctions and imaging applications.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: 2D Materials and Applications · Ga2O3 and related materials · GaN-based semiconductor devices and materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Victoria 3000, Australia

Sensor Devices & Metrology Group, CSIR—National Physical Laboratory (CSIR-NPL), Dr K. S. Krishnan Road, New Delhi 110012, India

Academy of Scientific & Innovative Research, (AcSIR), CSIR-HRDC Campus, Ghaziabad, Uttar Pradesh 201002, India

School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia

ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia

Micro Nano Research Facility, RMIT University, Melbourne, Victoria 3001, Australia

School of Engineering, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia

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