二维CdSe纳米膜的可控CVD制备及其优越的光电性能

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-06-12 DOI:10.1016/j.physb.2025.417497

Chenlong Weng, Yuliang Mao

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引用次数: 0

摘要

在这项研究中，我们开发了一种低温化学气相沉积（CVD）方法，以单质Cd和Se粉末为前驱体，以BiOCl催化介质在云母基质上生长高质量的2D CdSe纳米膜。该光电探测器在720 nm可见光照明下表现出优异的性能，响应率为25.9 a /W，探测率为3.18 × 1010 Jones，外量子效率（EQE）超过4461%，响应时间为32.3 ms（上升）和33.2 ms（下降）。此外，该器件表现出稳定可靠的光电开关行为，突出了2D CdSe纳米膜的优良质量及其在实际光电应用中的强大潜力。

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Controllable CVD preparation and superior photoelectric performance of 2D CdSe nanofilms

In this study, we have developed a low-temperature chemical vapor deposition (CVD) approach for growing high-quality 2D CdSe nanofilms on mica substrates using elemental Cd and Se powders as precursors with BiOCl catalytic mediation. The resulting photodetector demonstrates exceptional performance under 720 nm visible light illumination, achieving a responsivity of 25.9 A/W, a detectivity of 3.18 × 10¹⁰ Jones, and an external quantum efficiency (EQE) exceeding 4461 %, along with fast response times of 32.3 ms (rise) and 33.2 ms (fall). Furthermore, the device exhibits stable and reliable photoelectric switching behavior, highlighting the excellent quality of the 2D CdSe nanofilms and their strong potential for practical optoelectronic applications.

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces