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Electrically-Driven Polarized Nano-Light Sources Based on Suspended Graphene Nanoscrolls
Xu Han1,2, Yun-Yun Dai1,3, Yong-Zhi Xie4
1School of Integrated Circuits and Electronics, MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices, Beijing Institute of Technology, Beijing 100081, China.
ACS Nano
|August 15, 2025
Summary
Researchers developed a graphene nanoscroll (GNS) nanolight source (NLS) for on-chip photonics. This tunable NLS offers fast switching and enhanced emission, advancing integrated light source technology.
Area of Science:
- Photonics
- Materials Science
- Nanotechnology
Background:
- Low-dimensional nanomaterials are crucial for next-generation photonic chips.
- Current on-chip light sources include microlasers and LEDs.
- Miniaturized and controllable light sources are a key research area.
Purpose of the Study:
- To demonstrate a high-efficiency nanolight source (NLS) using graphene nanoscrolls (GNSs).
- To explore tunable emission and super-Planckian radiation effects in GNSs.
- To investigate electric field and structural design modulation of NLS emission.
Main Methods:
- Fabrication of a nanolight source based on graphene nanoscrolls.
- Characterization of emission spectrum tunability (infrared to visible).
- Investigation of super-Planckian radiation effect and absorption properties.
- Analysis of switching behavior and polarization.
Main Results:
- Demonstrated a GNS-based NLS with tunable emission across IR to visible spectrum.
- Observed super-Planckian radiation due to enhanced absorption (absorption coefficient > 1).
- Achieved fast switching (∼75 ms) and 20% polarization in visible range.
Conclusions:
- Graphene nanoscrolls enable high-efficiency, tunable, and fast-switching on-chip light sources.
- Enhanced absorption in GNSs leads to super-Planckian radiation.
- This research supports GNS emission studies and promotes on-chip NLS technology development.
