阅读说明：本技术 一种基于光响应的波长可调谐有机薄膜激光器件及应用 (Wavelength-tunable organic thin-film laser device based on photoresponse and application thereof ) 是由 赖文勇 林赫 张嘉玲 闫宇 姬东周 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种基于光响应的波长可调谐有机薄膜激光器件及应用,属于有机激光材料及应用领域。本发明在激光增益介质和光致变色分子的共混体系中实现了具有光响应和波长可调性的放大的自发辐射行为。通过使用紫外和可见光分别对器件曝光,可以实现红光与黄光的可逆输出。本发明的方法成本低廉、制备简单,可将该器件运用于有机发光二极管和有机激光器件,能够调制器件的输出电流与发光强度,构建多功能集成的有机光电器件。(The invention discloses a wavelength tunable organic thin film laser device based on photoresponse and application thereof, belonging to the field of organic laser materials and application thereof. The invention realizes amplified spontaneous emission behavior with photoresponse and wavelength adjustability in a blending system of the laser gain medium and the photochromic molecules. By using ultraviolet light and visible light to respectively expose the device, reversible output of red light and yellow light can be realized. The method has low cost and simple preparation, can be applied to organic light-emitting diodes and organic laser devices, can modulate the output current and the luminous intensity of the devices and construct multifunctional integrated organic photoelectric devices.)

1. The wavelength tunable organic thin film laser device based on photoresponse is characterized by comprising a substrate (1) and a gain medium (2), wherein the gain medium is composed of a host-guest doping system meeting the Forster energy transfer condition, a host is a fluorescent compound, and a guest is a photochromic compound.

2. The wavelength tunable organic thin film laser device based on photoresponse of claim 1, wherein the photochromic compound accounts for 10-40% of the doped system by mass.

3. The wavelength tunable organic thin film laser device according to claim 2, wherein the photochromic compound accounts for 20% of the doped system by mass.

4. The wavelength tunable organic thin film laser device according to claim 1, wherein the fluorescent compound is a fluorescent conjugated polymer having laser properties; the photochromic compound is an organic laser material with photoresponse characteristics.

5. The wavelength tunable organic thin film laser device according to claim 4, wherein the fluorescent conjugated polymer is organic yellow-green gain medium poly [ (9, 9-di-n-octylfluorenyl-2, 7-diyl) -alt- (benzo [2,1,3] thiadiazole-4, 8-diyl) ] F8BT or organic red gain medium poly [ 2-methoxy-5- (2-ethylhexyloxy) -1, 4-phenylacetylene ] "MEH-PPV.

6. The wavelength tunable organic thin film laser device according to claim 3, wherein the photochromic compound is spiro [1,3, 3-trimethylindochroman ] or SP.

7. The wavelength tunable organic thin film laser device according to claim 1, wherein the substrate is a quartz substrate or a quartz-based distributed feedback bragg grating substrate.

8. The wavelength tunable organic thin film laser device according to claim 1, wherein the gain medium is deposited by one of spin coating, ink jet printing or vacuum evaporation.

9. Use of a wavelength tunable organic thin film laser device based on optical response according to any of claims 1 to 8 as a light emitting device in an organic electroluminescent device, an optically pumped organic laser device or an electrically pumped organic laser device.

Technical Field

The invention relates to a wavelength tunable organic thin film laser device based on photoresponse and application thereof, belonging to the field of organic laser materials and application thereof.

Background

Organic laser has excellent monochromaticity and coherence, and has attracted great attention in recent years due to its excellent application prospect in the fields of color laser displays, integrated circuits, optical communication and the like. The output wavelength adjustability is an important quality factor for evaluating the performance of the organic laser, and the wavelength-adjustable laser can be widely applied to biological detection, holographic imaging, environmental monitoring, three-dimensional (3D) projection and the like. With the increasing demand of these photoelectric devices for functions, it is important to develop a multifunctional integrated organic laser device.

Disclosure of Invention

The technical problem is as follows: in order to overcome the defect of single function of the existing organic laser device and better meet the development of future laser technology, the invention provides a wavelength tunable organic thin film laser device based on photoresponse with excellent comprehensive performance. The device has two functions of photoresponse and wavelength tuning, can realize reversible output of red amplified spontaneous emission light and yellow amplified spontaneous emission light under the exposure of ultraviolet light and visible light, and has excellent repeatability and stability.

The technical scheme is as follows: the wavelength tunable organic thin film laser device based on photoresponse consists of a substrate and a gain medium layer. The gain medium is composed of a host-guest doping system meeting the Forster energy transfer condition, wherein the host is a fluorescent compound, and the guest is a photochromic compound.

Furthermore, the photochromic compound accounts for 10-40% of the doping system by mass.

Furthermore, the mass ratio of the photochromic compound in the doped system is 20%.

Further, the fluorescent compound is a fluorescent conjugated polymer with laser performance; the photochromic compound is an organic laser material with photoresponse characteristics.

Further, the fluorescent conjugated polymer is organic yellow-green light gain medium poly [ (9, 9-di-n-octylfluorenyl-2, 7-diyl) -alt- (benzo [2,1,3] thiadiazole-4, 8-diyl) ] namely F8BT or organic red light gain medium poly [ 2-methoxy-5- (2-ethylhexyloxy) -1, 4-phenylacetylene ] namely MEH-PPV.

Further, the photochromic compound is spiro [1,3, 3-trimethylindolylnchroman ], namely SP.

Further, the substrate is a quartz substrate or a distributed feedback bragg grating substrate based on quartz.

Further, the gain medium is deposited by one of spin coating, ink jet printing or vacuum evaporation.

Further, the device can be used as a light-emitting device applied to an organic electroluminescent device, an optically pumped organic laser device or an electrically pumped organic laser device.

Has the advantages that: the wavelength tunable organic thin-film laser device based on photoresponse realizes reversible modulation of yellow light and red light amplified spontaneous emission in a blending system of an organic semiconductor laser gain medium and photochromic dye molecules, has low threshold and good light circulation stability, and the threshold of two types of light Amplified Spontaneous Emission (ASE) is respectively 13.63 muJ/cm²And 27.21. mu.J/cm²And optical response and wavelength modulation functions can be maintained over multiple optical cycles. The working skillfully combines the photochromic dye and the Forster energy transfer principle, successfully applies the strategy to a photoresponse thin-film laser device with tunable wavelength, realizes a multifunctional integrated organic thin-film laser device with photoresponse and wavelength-tunable performance, and has potential application value in the fields of optical sensing, photoelectric devices controlled by an optical switch and the like.

Drawings

Fig. 1 is a schematic view of the device structure of the present invention.

Fig. 2 is a characterization of amplified spontaneous emission (ase) performance of the organic thin film laser device in example 1 under uv and visible light conditions.

Fig. 3 is a characterization of amplified spontaneous emission (ase) performance of the organic thin film laser device in example 2 under uv and visible light conditions.

Detailed Description

The photoresponse dual-wavelength organic laser consists of a substrate (1) and a gain medium (2), and has a device structure shown in figure 1:

the gain medium is composed of a host-guest doping system meeting the Forster energy transfer condition, wherein the host is a fluorescent compound, and the guest is a photochromic compound.

The photochromic compound accounts for 10 to 40 percent of the mass ratio of the doped system.

The photochromic compound accounts for 20% of the doping system by mass.

The fluorescent compound is a fluorescent conjugated polymer with laser performance; the photochromic compound is an organic laser material with photoresponse characteristics.

The fluorescent conjugated polymer is organic yellow-green light gain medium poly [ (9, 9-di-n-octylfluorenyl-2, 7-diyl) -alt- (benzo [2,1,3] thiadiazole-4, 8-diyl) ] namely F8BT or organic red light gain medium poly [ 2-methoxy-5- (2-ethylhexyloxy) -1, 4-phenylacetylene ] namely MEH-PPV.

The photochromic compound is spiro [1,3, 3-trimethylindolylnchroman ], namely SP.

The substrate is a quartz substrate or a distributed feedback Bragg grating substrate based on quartz.

The gain medium is deposited by one of spin coating, ink-jet printing or vacuum evaporation.

The device can be used as a light-emitting device applied to an organic electroluminescent device, an optically pumped organic laser device or an electrically pumped organic laser device.