Luminescence properties of mechanically nanoindented ZnSe

Yau, Wei Hung; Tseng, Pai Chung; Wen, Hua-Chiang; Tsai, Chien Huang; Chou, Wu–Ching

doi:10.1016/j.microrel.2011.01.005

Cited by 10 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PL emission for samples produced with 10 min residence time and temperatures of 320, 330, and 340 °C, revealed that a more uniform emission band is obtained only for temperatures above 330 °C, but narrower linewidth is obtained at 340 °C (Figure S2d). Nanocrystals synthesized after 10 min of reaction and with a preheating time below 40 min, exhibit emission spectra with a peak position (442 nm) close to the band gap emission of bulk ZnSe, ,− suggesting production of large ZnSe nanocrystals.…”

Section: Resultsmentioning

confidence: 99%

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Guidelli

Lignos²,

Yoo³

et al. 2018

Chem. Mater.

View full text Add to dashboard Cite

We describe the controlled colloidal synthesis and characterization of ZnSe quantum dots using a continuous-flow microfluidic reactor. A systematic investigation of the synthetic route reveals a possible two-stage pathway for ZnSe nanocrystal formation. The first stage corresponds to the formation of zinc selenide nuclei at low temperatures (160 °C), followed by the growth of ZnSe nanocrystals at higher temperatures (340 °C). The quantum dots exhibit sharp exciton absorption, with tunable emission spectra between 370 and 430 nm. The photoluminescence of ZnSe nanocrystals is characterized by narrow emission linewidths of 14–21 nm. For the first time, we report luminescent emission from ZnSe nanocrystals upon X-ray excitation, revealing that radioluminescence emission is associated to confined excitons, and that the radioluminescence intensity is a linear function of the fluence/dose rate of X-rays. The precise control of the synthesis of particles with uniform sizes and excellent optical properties associated with the microfluidic synthesis opens a new avenue for the controlled production of heavy-metal-free luminescent and radioluminescent nanocrystals in flow.

show abstract

Section: Resultsmentioning

confidence: 99%

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Guidelli

Lignos²,

Yoo³

et al. 2018

Chem. Mater.

View full text Add to dashboard Cite

show abstract

“…Jian and Tseng [22] also reported the nanomechanical properties and the contactinduced deformation behaviors of ZnSe thin film with the same techniques. Yau et al [23] employed cathodoluminescence (CL) to reveal the dynamics of recombination-enhanced dislocation of ZnSe materials under nanoindentation. With these methods, Wen et al [24] further examined the effects of the nanoindentation-induced residual stress of singlecrystalline ZnSe.…”

Section: Introductionmentioning

confidence: 99%

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Liu

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

Although ZnSe has been widely studied due to its attractive electronic and optoelectronic properties, limited data on its plastic deformations are available. Through molecular dynamics simulations, we have investigated the indentations on the (001), (110), and (111) planes of ZnSe nano films. Our results indicate that the elastic modulus, incipient plasticity, elastic recovery ratio, and the structural evolutions during the indenting process of ZnSe nano films show obvious anisotropy. To analyze the correlation of structural evolution and mechanical responses, the atomic displacement vectors, atomic arrangements, and the dislocations of the indented samples are analyzed. Our simulations revealed that the plastic deformations of the indented ZnSe nano films are dominated by the nucleation and propagation of 1/2<110> type dislocations, and the symmetrically distributed prismatic loops emitted during the indenting process are closely related with the mechanical properties. By studying the evolutions of microstructures, the formation process of the dislocations, as well as the formation mechanisms of the emitted prismatic loops under the indented crystalline planes are discussed. The results presented in this work not only provide an answer for the questions about indentation responses of ZnSe nano films, but also offer insight into its plastic deformation mechanisms.

show abstract

A review of nanoindentation and related cathodoluminescence studies on semiconductor materials

Sharma

Sharma²,

Saxena³

et al. 2022

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Luminescence properties of mechanically nanoindented ZnSe

Cited by 10 publications

References 34 publications

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

A review of nanoindentation and related cathodoluminescence studies on semiconductor materials

Contact Info

Product

Resources

About