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arXiv · 2310.03886

Demonstration of a monocrystalline GaAs-$\beta$-Ga$_2$O$_3$ p-n heterojunction

Jie Zhou·Moheb Sheikhi·Ashok Dheenan·Haris Abbasi·Jiarui Gong·Yang Liu·Carolina Adamo·Patrick Marshall·Nathan Wriedt·Clincy Cheung·Shuoyang Qiu·Tien Khee Ng·Qiaoqiang Gan·Vincent Gambin·Boon S. Ooi·Siddharth Rajan·Zhenqiang Ma
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Abstract

In this work, we report the fabrication and characterizations of a monocrystalline GaAs/$\beta$-Ga$_2$O$_3$ p-n heterojunction by employing semiconductor grafting technology. The heterojunction was created by lifting off and transfer printing a p-type GaAs single crystal nanomembrane to an Al$_2$O$_3$-coated n-type$\beta$-Ga$_2$O$_3$ epitaxial substrate. The resultant heterojunction diodes exhibit remarkable performance metrics, including an ideality factor of 1.23, a high rectification ratio of 8.04E9 at +/- 4V, and a turn on voltage of 2.35 V. Furthermore, at +5 V, the diode displays a large current density of 2500 A/cm$^2$ along with a low ON resistance of 2 m$\Omega\cdot$cm$^2$.

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Jie Zhou, Moheb Sheikhi, Ashok Dheenan, Haris Abbasi, Jiarui Gong, Yang Liu, Carolina Adamo, Patrick Marshall, Nathan Wriedt, Clincy Cheung, Shuoyang Qiu, Tien Khee Ng, Qiaoqiang Gan, Vincent Gambin, Boon S. Ooi, Siddharth Rajan, Zhenqiang Ma. 2023-10-05. Demonstration of a monocrystalline GaAs-$\beta$-Ga$_2$O$_3$ p-n heterojunction. https://arxiv.org/abs/2310.03886

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