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arXiv · 2602.07424

Efficient and Robust p-type Transistor based on Ultra-wide-bandgap Semiconductor

Kaijian Xing·Zherui Yang·Weiyao Zhao·Yuefeng Yin·Huiping Han·Shanhu Wang·Shifan Wang·James Bullock·Alastair Stacey·James A. Belcourt·Sergey Rubanov·Hang Yin·David A. Broadway·Jean-Philippe Tetienne·Xinmao Yin·Liang Wu·Dong-Chen Qi·Michael S. Fuhrer·Qingdong Ou·Xiao Renshaw Wang
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Abstract

The p-type transistor is an indispensable component of semiconductor technology, enabling complementary operation with n-channel transistors for computation, storage, and communication. Achieving both high robustness and high efficiency is highly desirable but challenging for p-type transistors due to limited semiconductors with reliable hole transport and their high activation energies. Here, we achieved a robust yet efficient p-type transistor by heterogeneously integrating an ultra-wide-bandgap semiconductor and a high-k dielectric layer through van der Waals integration. The p-type transistor employs a two-dimensional hole channel on hydrogenated diamond (bandgap 5.6 eV) combined with a high-k (30.5) SrTiO3 perovskite membrane. At room temperature, the transistor exhibits stable operation with a high on-current (~200 mA/mm), low subthreshold swing (70 mV/dec), high hole mobility (566 cm^2/Vs to 572 cm^2/Vs) and high on-off ratio (~10^9). Furthermore, tuning annealing temperature allows operation in either enhancement or depletion mode. The robust p-type transistor with high efficiency holds great potential for future power electronics, UV optoelectronics, and harsh-environment electronic applications.

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Kaijian Xing, Zherui Yang, Weiyao Zhao, Yuefeng Yin, Huiping Han, Shanhu Wang, Shifan Wang, James Bullock, Alastair Stacey, James A. Belcourt, Sergey Rubanov, Hang Yin, David A. Broadway, Jean-Philippe Tetienne, Xinmao Yin, Liang Wu, Dong-Chen Qi, Michael S. Fuhrer, Qingdong Ou, Xiao Renshaw Wang. 2026-02-07. Efficient and Robust p-type Transistor based on Ultra-wide-bandgap Semiconductor. https://doi.org/10.1021/acsnano.5c22605

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