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相关概念视频

P-N junction01:11

P-N junction

545
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...
545
Biasing of P-N Junction01:16

Biasing of P-N Junction

557
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...
557

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相关实验视频

Updated: Jul 12, 2025

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
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基于的多谱光探测器,配有堆叠的PN连接点.

Chenguang Wang, Jiangting Zhao, Huiliang Cao

    Optics express
    |October 20, 2023
    PubMed
    概括

    这项研究介绍了一种使用堆叠PN连接的新型多光谱光探测器. 这种设计通过减少颜色别名,提高成像质量,并通过快速响应时间实现广泛的光谱吸收.

    科学领域:

    • 光电学是指光电子产品.
    • 材料科学 材料科学 材料科学
    • 半导体设备 半导体设备

    背景情况:

    • 多光谱成像需要能够在各种波长上捕获信息的探测器.
    • 传统的光电探测器通常在光谱范围,响应速度或颜色保真性方面面临限制.
    • 基于的光电探测器是可取的,因为它们的成本效益和与现有的制造工艺的兼容性.

    研究的目的:

    • 提出和分析一种基于的多光谱光探测器结构.
    • 为了实现高量子效率和快速响应时间,改善成像.
    • 为了减少颜色别名,并使从紫外线到可见光的广泛光谱吸收.

    主要方法:

    • 一个光电探测器结构的设计,有四个垂直堆叠的PN连接点.
    • 在基板层内集成四个光电二极管.
    • 分析量子效率和响应时间特征.

    主要成果:

    • 实现了高达70%的量子效率.
    • 证明了5.1 × 10-8秒的响应时间.
    • 垂直堆叠的PN连接结构有效地减少了颜色别名.

    结论:

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    • 拟议的光探测器为多光谱成像提供了一个简单的结构.
    • 实现从紫外线到可见光的高速,多光谱吸收.
    • 为高质量的成像应用提供有效的解决方案.