Synthesis of ZnSe Nanocrystals for Solid-state Lighting Applications

Tran Thi Kim Chi; Bui Thi Thu Hien; Hoang Nhu Thanh; Trinh Duc Thien; Pham Nguyen Hai

doi:10.15625/0868-3166/15358

Synthesis of ZnSe Nanocrystals for Solid-state Lighting Applications

Tran Thi Kim Chi, Bui Thi Thu Hien, Hoang Nhu Thanh, Trinh Duc Thien, Pham Nguyen Hai

Author affiliations

Authors

Tran Thi Kim Chi Insitute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Bui Thi Thu Hien Insitute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Hoang Nhu Thanh Luong The Vinh College, Vu Ban, Nam Dinh, Vietnam,
Trinh Duc Thien Hanoi National University, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam
Pham Nguyen Hai VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/15358

Keywords:

ZnSe, nanocrystals, hydrothermal, photoluminescence, solid-state lighting

Abstract

We report the large-scale synthesis of highly luminescent ZnSe nanocrystals (NCs) by a simple and low-cost hydrothermal method. XRD (X-ray Diffraction) and HR-TEM (High Resolution Transmission Microscopy) characterization studies confirmed the formation of as-synthesized ZnSe NCs in cubic structure. The optical property of ZnSe NCs were tunable via controlling the Zn:Se molar precursor ratio (0.5:1–1.5:1), reaction temperature (150–200 ⁰C), and reaction time (5–30 h). The resulting ZnSe NCs with the Zn:Se precursor ratio of 1:1, hydrothermally treated at 190 ⁰C for 20 h exhibited the highest photoluminescence quantum yield obtained by PL spectra with the 355 nm excitation. The current–voltage (I–V) characteristics of the ZnSe NCs show its promising application in the solid-state lighting.

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Published

06-01-2021

How to Cite

[1]

T. T. Kim Chi, B. T. T. Hien, H. N. Thanh, T. D. Thien and P. N. Hai, Synthesis of ZnSe Nanocrystals for Solid-state Lighting Applications, Comm. Phys. 31 (2021) 85. DOI: https://doi.org/10.15625/0868-3166/15358.

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Issue

Vol. 31 No. 1 (2021)

Section

Papers

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