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journal article·2026-06-01Open access

Electronic origins of dual emission in Mn-doped ZnSe quantum dots

Thanh Dam Pham, Thanh Binh Dinh, Duy Manh Le, Thi Huyen Nguyen, Manh Ha Hoang, T. Quynh Hoa Tran, Do Thi Anh Thu, Minh Tan Man

AIP Advances· Volume 16· Issue 6
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Source abstract

Abstract

Mn-doped ZnSe quantum dots were synthesized by a hot-injection method and exhibit phase-pure cubic structures with substitutional Mn incorporation. Density functional theory calculations reveal shallow Mn-induced impurity states and p–d hybridization near the valence band, enabling multiple excitation pathways. Optical measurements show band-edge absorption, Mn-related transitions, and dual photoluminescence from ZnSe and Mn2+ centers. A combined mechanism involving excitonic energy transfer, defect-assisted relaxation, and host-to-Mn charge transfer explains the observed optical behavior. These results establish a direct link between Mn-induced electronic modifications and the photophysics of ZnSe quantum dots.
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Research context

OpenAlex topics: Quantum Dots Synthesis And Properties · Semiconductor Quantum Structures and Devices · Silicon Nanostructures and Photoluminescence

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Advanced Materials and Natural Resources, Institute for Advanced Study in Technology, Ton Duc Thang University 1 , Ho Chi Minh City,

Faculty of Electrical and Electronics Engineering, Ton Duc Thang University 2 , Ho Chi Minh City,

Faculty of Applied Sciences, Ton Duc Thang University 3 , Ho Chi Minh City,

Hanoi Architectural University 4 , 129 Tran Phu, Ha Dong, Hanoi,

Faculty of Mechanical Engineering, Hanoi University of Civil Engineering 5 , 55 Giai Phong, Bach Mai, Hanoi,

Institute of Materials Science, Vietnam Academy of Science and Technology 6 , 18 Hoang Quoc Viet, Cau Giay, Hanoi,

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