用于逻辑和安全光通信应用的太阳盲紫外β -Ga2O3光电晶体管

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-07-22 DOI:10.1063/5.0281687

Anqi Qiang, Bingjie Ye, Leyang Qian, Huazhen Sun, Xiumei Zhang, Yushen Liu, Irina N. Parkhomenko, Fadei F. Komarov, Xinyi Shan, Yu Liu, Guofeng Yang

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引用次数: 0

摘要

这项工作提出了一种高性能的太阳盲光电晶体管的制造基于β-Ga2O3薄膜与环形栅极电极，具有高κ Al2O3栅极介电层。在255 nm紫外光（UV）照射下，该器件具有5.26 × 1014 Jones的高比探测率（D*），光暗电流比为7.11 × 105，响应率(R)为4.01 a /W，紫外可见光抑制比为6 × 102。另外，通过栅极电压和太阳盲紫外光作为输入，调节源漏电压，实现非或与非与（NAND）逻辑功能的切换，源漏电流作为输出。基于NAND逻辑运算，门电压作为加密输入信号的密钥，实现安全的光通信。这些结果为实现基于Ga2O3光电晶体管的安全光通信提供了合适的方法。

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Solar-blind ultraviolet β -Ga2O3 phototransistor for logic and secure optical communication applications

This work presents the fabrication of a high-performance solar-blind phototransistor based on a β-Ga2O3 thin film with a ring-shaped gate electrode, featuring a high-κ Al2O3 gate dielectric layer. Under 255 nm ultraviolet (UV) illumination, the device exhibits a high specific detectivity (D*) of 5.26 × 1014 Jones, a photo-to-dark current ratio of 7.11 × 105, a responsivity (R) of 4.01 A/W, and a UV-to-visible rejection ratio of 6 × 102. In addition, by using the gate voltage and solar-blind UV light as inputs and adjusting the source–drain voltage, switchable Not OR and Not AND (NAND) logic functions are achieved, with the source–drain current as the output. Based on the NAND logic operation, the gate voltage serves as a key to encrypt input signals, enabling secure optical communication. These results provide an appropriate approach for implementing secure optical communication based on Ga2O3 phototransistors.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.