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Emitting organic laser thin film device equipped with gold nanoparticle enhanced light pumped surface and application and preparation method thereof

A gold nanoparticle and laser thin film technology, which is applied in the field of lasers, can solve the problems of not fully utilizing organic semiconductor laser devices, and achieve the effects of simple and fast preparation methods, lower hole injection barriers, and lower threshold values

Active Publication Date: 2017-07-07
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These structures are suitable for applications to fundamental research on semiconductor lasers, but they do not take full advantage of the advantages of organic semiconductor laser devices

Method used

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  • Emitting organic laser thin film device equipped with gold nanoparticle enhanced light pumped surface and application and preparation method thereof
  • Emitting organic laser thin film device equipped with gold nanoparticle enhanced light pumped surface and application and preparation method thereof
  • Emitting organic laser thin film device equipped with gold nanoparticle enhanced light pumped surface and application and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In this example, see figure 1 , an organic laser emitting thin film device sample 1 with a gold nanoparticle-enhanced optical pumping surface, mainly composed of a substrate 1 and a gain medium layer 4, and an enhanced laser radiation is also arranged between the substrate 1 and the gain medium layer 4 Composite film, specifically:

[0058] On the surface of the substrate 1, there is a discontinuous film of discrete particles formed by gold nanoparticles 2 that cannot conduct overall lateral conduction, and an uneven film of discrete particles formed by gold nanoparticles 2 and the gain medium layer 4 is provided. The film of the spacer layer 3, that is, between the substrate 1 and the gain medium layer 4, the enhanced laser radiation composite film formed by the discrete particle film of gold nanoparticles 2 and the thin film of the spacer layer 3 is set; The gold in the thin film forms isolated particles or aggregates of fragmented particles; the spacer layer 3 is ma...

Embodiment 2

[0082] This embodiment is basically the same as Embodiment 1, especially in that:

[0083] In this embodiment, a sample 2 of an emitting organic laser thin film device with an optically pumped surface enhanced by gold nanoparticles is mainly composed of a substrate 1 and a gain medium layer 4, between the substrate 1 and the gain medium layer 4 Also set enhanced laser radiation composite film, specifically:

[0084] On the surface of the substrate 1, there is a discontinuous film of discrete particles of gold nanoparticles 2 formed by gold nanoparticles 2 that cannot conduct overall lateral conduction, and between the film of discrete particles formed of gold nanoparticles 2 and the gain medium layer 4 A non-flat spacer layer 3 film is arranged between them, that is, between the substrate 1 and the gain medium layer 4, a laser radiation-enhancing composite film formed by laminating the discrete particle film of gold nanoparticles 2 and the film of the spacer layer 3 is arrange...

Embodiment 3

[0100] This embodiment is basically the same as the previous embodiment, and the special features are:

[0101] In this embodiment, a thin-film emitting organic laser device sample 4 with a gold nanoparticle-enhanced optical pumping surface is mainly composed of a substrate 1 and a gain medium layer 4, between the substrate 1 and the gain medium layer 4 Also set enhanced laser radiation composite film, specifically:

[0102] The discrete particle film of gold nanoparticle 2 is the same as embodiment one, and the material of spacer layer 3 is selected Alq 3 .

[0103] In this embodiment, the laser gain medium in the gain medium layer 4 is made of organic small molecule host-guest material, and its host material is an organic small molecule material that can effectively absorb laser energy. The host in the gain medium layer 4 The material is 1,4-bis[N-(1-naphthyl)-N'-phenylamino]-4,4'diamine, 1,4-bis[2-[4-[N,N-di(p-tolyl) amino]phenyl]vinyl]benzene and tris-(8-hydroxyquinolin...

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Abstract

The invention discloses an emitting organic laser thin film device equipped with a gold nanoparticle enhanced light pumped surface and an application and a preparation method thereof. The device is based on the gold nanoparticle local surface plasmon resonance effect and scattering effect so that the properties of surface emitting laser can be effectively improved, including enhancement of emitting intensity, reduction of threshold and enhancement of quality factor. The device is characterized in that the device is composed of a glass substrate, gold nanoparticles, a spacing layer and a gain medium. The laser gain medium is composed of doped small organic molecule host and guest materials. The spacing layer and the gain medium are identical in the host materials. The laser structure is used as a color conversion layer to be applied to an organic electro-diode, and an organic dye thin film layer can be excited to emit light in the combined device by using light emitted by the light-emitting layer so that an effective scheme can be provided for realizing a simple structure electrically pumped organic laser device. The structure is prepared by a vacuum vapor plating method so as to be easy and fast.

Description

technical field [0001] The invention relates to a thin-film laser and a preparation method thereof, in particular to a small-molecule organic laser thin-film device, an application and a preparation method thereof, which are applied in the technical field of lasers. Background technique [0002] For laser working substances, we usually use solids such as glass and crystals, liquids such as organic and inorganic liquids, gases such as molecular gases, atomic gases, and ion gases, and semiconductors. The preparation process of these laser materials is difficult and expensive, and they have their own limitations in performance. For a long time, scientists have been working on the development of new laser dyes, so as to obtain more perfect lasers. [0003] Since 1964, Stockman et al. used a high power flash lamp to pump C 20 h 12 The phenomenon of net gain was found in the solution, demonstrating for the first time that an organic compound can produce lasing. Organic semicon...

Claims

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Application Information

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IPC IPC(8): H01S3/0947
Inventor 朱文清俞静婷石冠杰翟光胜张沛陈果魏斌
Owner SHANGHAI UNIV
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