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논문 기본 정보

저자정보
(Jeonbuk National University) (Jeonbuk National University) (Dayananda Sagar University) (Jeonbuk National University) (Jeonbuk National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.26 No.5
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    초록·키워드

    We have systematically investigated the effect of the variation in the doping concentration and thickness of the Cu₂O layer on the electrical characteristics of the p-type Cu₂O/n-type Ga₂O₃ heterojunction p-n diode. In particular, the effect of the doping concentration and thickness of Cu₂O was explored in order to enhance the breakdown voltage of the p-type Cu₂O/n-type Ga₂O₃ heterojunction p-n diode. The on-resistance of the device was noted to decrease from 41.2 MΩ·cm² to 0.815 mΩ·cm² with increasing electron affinity of the Cu₂O layer. The breakdown voltage of the device increased with increasing doping concentration and increase in thickness of the Cu₂O layer until the respective values reached to 1 × 10<sup>18</sup> cm<sup>−3</sup> and 200 nm with the breakdown voltage of the p-n diode reaching 1500 V. The increase in breakdown voltage of the p-n diode with thickness of Cu₂O layer is attributed to the fact that a thicker layer could accommodate a wider depletion region. While the increase in breakdown voltage with doping concentration of p-type Cu₂O is due to widening of the depletion width in the drift layer. An electric field distribution under the anode edges for the p-type Cu₂O/n-type Ga₂O₃ heterojunction p-n diode has been presented and discussed in detail through technology computer aided design (TCAD) simulation. The results of this work provide a vital insight for the design and performance enhancement of the next-generation Ga₂O₃-based high-power devices.

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