Novel metal-induced surface passivation of ZnO for strong supression of defect emission luminescence

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2026-06-01 Epub Date: 2026-01-30 DOI:10.1016/j.optmat.2026.117933

Ngo Thi Quyen , Hoang Gia Chuc , Do Quang Trung , Nguyen Tu , Nguyen Van Du , Pham Thanh Huy , Phuong Dinh Tam , Manh Trung Tran

引用次数: 0

Abstract

Metal doping in ZnO often enhances defect-related visible emission, limiting UV performance. We report a PdO/Pd-induced surface passivation strategy to improve the optical quality of ZnO nanorods. Structural and spectroscopic analyses confirm PdO/Pd surface decoration and strong interfacial coupling with ZnO. The PdO/Pd layers suppress deep-level emission and enhance near-band-edge luminescence via synergistic defect passivation, interfacial band bending, and localized surface plasmon effects. As a result, the ZnO/PdO/Pd heterostructures exhibit a 52.6-fold increase in the UV-to-visible emission ratio.

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新型金属诱导氧化锌表面钝化，强抑制缺陷发射发光

在ZnO中掺杂金属通常会增强缺陷相关的可见发射，从而限制了紫外性能。我们报道了一种PdO/ pd诱导的表面钝化策略，以提高ZnO纳米棒的光学质量。结构和光谱分析证实了PdO/Pd表面修饰和与ZnO的强界面耦合。PdO/Pd层通过协同缺陷钝化、界面带弯曲和局部表面等离子体效应抑制深能级发射并增强近带边缘发光。结果表明，ZnO/PdO/Pd异质结构的紫外-可见发射比增加了52.6倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.