journal article·2024-01-12

Si-Based GaN Light-Emitting Diodes with MoS2 Nanosheet-Decorated Fabry–Perot Waveguide Structure

Feifei Qin, Yue Cao, Meng Li, Shun Lu, Mufei Tian, Ying Yang, Junfeng Lu, Xu Wang, Binghui Li, Yongjin Wang, Gangyi Zhu

ACS Applied Nano Materials· Volume 7· Issue 1
Publisher page

Abstract

III–V semiconductor light-emitting diodes (LEDs) on Si substrates, suitable for large-scale and large-wafer-size manufacturing, are a convenient option for on-chip light sources. Here, we present the design and fabrication of a MoS 2 nanosheet-decorated InGaN/AlGaN/GaN LED on a Si substrate with a Fabry–Perot waveguide, utilizing standard microfabrication processes. We assess the voltage–current characteristics, electroluminescence (EL) properties, polarization properties, chrominance, and surface temperature of the device. The MoS 2 layer’s spectrum filtering effect and the waveguide’s interference effect influence the EL properties of GaN LED. The MoS 2 -decorated LED device presented different properties than the bare LED in terms of a higher turn-on voltage, uniform emission pattern, lower surface temperature, and higher polarizability. Besides, the underlying mechanism for spectral modulation is studied. The MoS 2 -decorated device demonstrates an EL peak near 417 nm, with a high side mode suppression ratio and full width at half-maximum (FWHM) < 1 nm. Our study offers insights into the potential realization of light sources with narrowed spectra using GaN LEDs based on Si materials.
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Research context

OpenAlex topics: GaN-based semiconductor devices and materials · 2D Materials and Applications · ZnO doping and properties

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

Affiliations

GaN Optoelectronic Integration International Cooperation Joint Laboratory of Jiangsu Province, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China

College of Physics and Key Laboratory of Aerospace Information Materials and Physics (MIIT), Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Funding

Natural Science Foundation of Jiangsu Province · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · State Key Laboratory of Luminescence and Applications

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