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What is Indium Selenide Used for?

The purchasing pace at the demand end of the international thermal coal market continues to slow down and the international thermal coal price continues to decline. Prices for thermal coal at major international ports continued to fall last week as buyers in Europe slowed in recent days for April, coupled with weaker-than-expected import demand from End users in China. According to China Coal Market net monitoring:  Australia Newcastle port thermal coal price index was 253 USD/ton, compared with 309.02 USD/ton, down 56.02 USD/ton, down 18.13%. South Africa's Port Richards thermal coal price Index was $264.5 / mt, down the US $62.72 / mt or 19.17% from US $327.22 / mt. The European ARA Tri-port thermal coal price Index was $281.8 / ton. Does the price of thermal coal in major international ports continue to decline to affect the price of the Indium Selenide? 

What is Indium Selenide?

Indium Selenide is an inorganic compound with the chemical formula In2Se3. Black crystals or dark black scale-like substances. It is a typical two-dimensional layered semiconductor material.


Single crystal indium selenide can be prepared by the Bridgman–Stockberger method. Using a certain proportion of selenium and indium as raw materials, each compound of indium selenide can be prepared by reacting in a tube furnace at high temperature for a long time.


The research on the hydrothermal synthesis of In2Se3 was relatively late. Ascorbic acid was dissolved in ethanol solution at 60 °C, then InCl3 and Se powder were added, and the reaction kettle was kept at 220 °C for 20 hours. -4 μm flower-like γ-In2Se3 spheres.


What is indium selenide used for

InSe is a bandgap-tunable layered semiconductor material with nonlinear optical response over a wide wavelength range. The researchers obtained InSe nanosheets with suitable thickness and band gap by a liquid-phase exfoliation method, and systematically investigated their nonlinear optics and ultrafast carrier dynamics at different pulse width scales (ns and fs).


The researchers found that InSe nanosheets are more likely to reach saturable absorption under wide-pulse laser excitation. Furthermore, the InSe dispersions exhibit different mechanisms of scattering phenomena at different pulse durations, which are due to the thermal effect under ns-pulse excitation and the dynamic spatial self-phase modulation of the laser flow under fs-pulse excitation. 


At the same time, the optical switch modulation is realized by utilizing the competitive relationship between saturable absorption at low energy and nonlinear scattering at high energy. The time-resolved pump-probe results indicate that the InSe dispersion has an ultrafast saturable absorption process and a photoinduced absorption process that may be caused by free carrier absorption or bandgap renormalization.


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The current international situation is highly uncertain, and its economic impact has not been able to be assessed properly. In addition, rising energy and commodity prices and supply chain disruptions are expected to push the price of the Indium Selenide higher.

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