光触发的反双极晶体管基于一个在平面上的横向同联接器
Hecheng Han1, Baoqing Zhang1, Zihao Zhang1
1Shandong Technology Center of Nanodevices and Integration, School of Integrated Circuit, Shandong University, Jinan 250101, China.
Nano letters
|July 2, 2024
概括
这项研究引入了使用WSe2同位连接的新型光触发反双极晶体管 (AAT),克服了光检测器中的制造挑战和暗电流问题. 该设备提供高性能,并可实现高效的自动驾驶光检测和多值逻辑.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术纳米技术
背景情况:
- 反双极晶体管 (AAT) 通常依赖于复杂的不对称异构结构,造成制造困难.
- 现有用于光检测的AATs受到高暗电流的影响,限制了灵敏度.
- 范德瓦尔斯的异构结构虽然很常见,但却面临着制造业的挑战.
研究的目的:
- 开发一种新型的光触发AAT,基于WSe2同位结.
- 克服现有的AATs的局限性,例如制造复杂性和光探测器的敏感性差.
- 为了证明这个新设备在低功耗,高性能光电探测器和多值逻辑方面的潜力.
主要方法:
- 在没有范德瓦尔斯异构结构的情况下,制造一个在平面上的侧面WSe2同接点.
- 利用底部电极的选效应来动态调节 WSe2 通道的门电压.
- 该设备的反双极行为,响应能力,检测能力和自动驾驶光检测能力的表征.
主要成果:
- 在WSe2同位连接装置中展示了可静电重新配置和光触发的反双极行为.
- 在低功率635nm照明下实现了高响应性 (188 A/W) 和探测性 (8.94 × 10^14 Jones).
- 成功实现了使用单体WSe2.2的高效自动光检测和三元逆变器.
结论:
- 开发的WSe2同位结为制造低功耗,高性能光电探测器提供了一个有前途的新途径.
- 该设备的独特特性使得高效的自动驾驶光检测成为可能,减少了对外部电源的需求.
- WSe2的单立体集成简化了先进的多值逻辑设备的制造.
相关概念视频
01:16Biasing of P-N Junction
505
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
505
01:22Bipolar Junction Transistor
715
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
715
01:11P-N junction
510
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
510
01:15Working Principle of BJT
483
A Bipolar Junction Transistor (BJT), specifically a PNP transistor in a common-base configuration, effectively amplifies or switches electronic signals by controlling the flow of charge carriers. This discussion focuses on its operation in the active mode.
In the PNP configuration, the emitter is heavily doped with positive charge carriers (holes), while the base is lightly doped with negative carriers (electrons). This setup allows for a forward bias across the emitter-base junction,...
In the PNP configuration, the emitter is heavily doped with positive charge carriers (holes), while the base is lightly doped with negative carriers (electrons). This setup allows for a forward bias across the emitter-base junction,...
483
01:27Biasing of Metal-Semiconductor Junctions
238
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
238
01:21Modes of Operations of BJT
1.1K
A Bipolar Junction Transistor (BJT) is a versatile component in electronics, functioning in four distinct modes based on the biasing of its junctions: active, saturation, cut-off, and inverted modes.
Active Mode: The most common mode for amplification, the active mode features a forward-biased emitter-base junction and a reverse-biased base-collector junction. This setup enables electrons to be injected from the emitter to the base while blocking the majority carriers at the collector. The...
Active Mode: The most common mode for amplification, the active mode features a forward-biased emitter-base junction and a reverse-biased base-collector junction. This setup enables electrons to be injected from the emitter to the base while blocking the majority carriers at the collector. The...
1.1K