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., vol. 31, no. 1, p. 85, Jan. 2021.

Issue

Section

Papers
Received 11-08-2020
Accepted 05-10-2020
Published 06-01-2021

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