Hubei University

Guokun Ma

Hao Wang

Xu Chen

Jun Zhang

Haozhao Wan

Hanbin Wang

Hai Zhou

Tianci Wu

Zehao Song

A FePtCuheterogeneous phase structure polyhedron nanoparticle, a preparing method and an application as an efficient fuel cell oxygen reduction catalyst are provided. The FePtCuheterogeneous phase structure polyhedron nanoparticle, includes: three elements of Fe, Pt and Cu; wherein the FePtCuheterogeneous phase structure polyhedron nanoparticle has a heterogeneous phase structure in which face-centered cubic and face-centered tetragonal coexist; wherein the heterogeneous phase structure is a face-centered tetragonal phase shell and face-centered cubic core with a high crystal plane index; a surface of the polyhedron nanoparticle has 1 to 2 atomic layers of enriched with Pt; a diameter distribution of the nanoparticles is at a range of 4.5 to 14.5 nm, and an average size is 8.4 nm. In the invention, hexadecylamine, iron acetylacetonate, copper acetylacetonate, platinum acetylacetonate, and 1,2-hexadecanediol are uniformly mixed, and oleylamine and oleic acid are added, condensed refluxed at 320-330&#xb0; C.

FePtCupolyhedron nanoparticle with heterogeneous phase structure, preparing method and application thereof

A light-responsive LED (Light Emitting Diode) based on a GaN/CsPbBrIheterojunction, a preparation method and an application thereof are provided. The light-responsive LED consists of a GaN base layer on a sapphire substrate, an all-inorganic perovskite CsPbBrIfilm, an indium electrode and a carbon electrode, forming an In/GaN/CsPbBrI/C structure, wherein: in the CsPbBrIfilm, 0&#x3c;x&#x3c;3; the all-inorganic perovskite CsPbBrIfilm and the indium electrode are arranged on the GaN base layer in parallel; and the carbon electrode is arranged on the all-inorganic perovskite CsPbBrIfilm. The CsPbBrIfilm is prepared through a low-temperature anti-solvent method. The prepared LED device is able to realize integration of self-powered visible detection and visible luminescence, and able to work as a transmitting terminal or a receiving terminal in visible light wireless communication, which solves a difficult problem of backward communication in visible light wireless communication technology.

Preparation method and application of light-responsive LED based on GaN/CsPbBrIheterojunction

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Hubei, China

Guokun Ma