發(fā)布時(shí)間：2018-07-16 07:40

【摘要】：在硅基探測(cè)器的入射窗上制備熒光下轉(zhuǎn)換薄膜,是一種有效降低成本的紫外熒光增強(qiáng)技術(shù)。從理論上探討了由聚二甲基硅氧烷與顏料黃101混合膠體的紫外熒光薄膜旋涂工藝參數(shù)與性能之間關(guān)系,搭建紫外熒光薄膜應(yīng)用于光譜分析的性能測(cè)試實(shí)驗(yàn)平臺(tái),對(duì)紫外熒光增強(qiáng)薄膜旋涂工藝參數(shù)質(zhì)量配比、旋涂轉(zhuǎn)速進(jìn)行優(yōu)化。光譜分析探測(cè)器有兩個(gè)主要指標(biāo),光譜響應(yīng)靈敏度和光譜分辨率,分析與實(shí)驗(yàn)結(jié)果表明,利用旋涂法制備紫外增強(qiáng)熒光薄膜,旋涂轉(zhuǎn)速將直接影響薄膜的厚度、表面粗糙度和熒光物質(zhì)的分布,從而影響光譜分析系統(tǒng)的分辨率;紫外熒光增強(qiáng)薄膜的增強(qiáng)效率與熒光溶劑聚二甲基硅氧烷與熒光物質(zhì)顏料黃101的質(zhì)量比密切相關(guān),質(zhì)量比低無(wú)法滿足對(duì)紫外響應(yīng)效率的提高,但高質(zhì)量比,熒光物質(zhì)處在聚集態(tài)熒光自猝滅嚴(yán)重,也不利于增強(qiáng)薄膜的紫外響應(yīng)效率。最終,在薄膜旋涂工藝優(yōu)化的基礎(chǔ)上,旋涂轉(zhuǎn)速2 500~3 000r·min~(-1),熒光物質(zhì)與熒光溶劑質(zhì)量比為7∶100制備出紫外熒光增強(qiáng)薄膜。汞燈特征光譜測(cè)試結(jié)果表明該薄膜313nm紫外波長(zhǎng)處探測(cè)響應(yīng)靈敏度提高了1.6倍左右,對(duì)比分析鍍膜前后特征光譜的半波帶寬,鍍制紫外增強(qiáng)熒光薄膜對(duì)其影響很小。
[Abstract]:It is an effective technology to reduce the cost of UV fluorescence enhancement by preparing fluorescence downconversion thin films on the incident window of silicon based detectors. The relationship between the process parameters and the properties of the UV fluorescent thin film, which is mixed with polydimethylsiloxane and pigment yellow 101, is discussed theoretically, and the experimental platform for testing the performance of the ultraviolet fluorescent film used in spectral analysis is built. The mass ratio and rotation speed of UV fluorescence enhanced film spin-coating process parameters were optimized. Spectral analysis detector has two main indexes, spectral response sensitivity and spectral resolution. The results of analysis and experiment show that the rotational speed of spin coating will directly affect the thickness of ultraviolet enhanced fluorescence film. The surface roughness and the distribution of fluorescent substances affect the resolution of the spectral analysis system, and the enhancement efficiency of the UV-enhanced film is closely related to the mass ratio of the fluorescent solvent polydimethylsiloxane to the fluorescent pigment yellow 101. The low mass ratio can not satisfy the improvement of the UV response efficiency, but the high mass ratio, the fluorescence substance in the aggregation state fluorescence self-quenching is serious, also is not conducive to enhance the UV response efficiency of the film. Finally, on the basis of the optimization of the spin-coating process, UV enhanced fluorescence films were prepared by the spin coating rotation speed of 2 500 ~ (3 000) r / min ~ (-1) and the mass ratio of fluorescent substance to fluorescent solvent at 7: 100. The measured results of the characteristic spectrum of mercury lamp show that the detection sensitivity at the UV wavelength of the film is about 1.6 times higher. Compared with the half-wave bandwidth of the characteristic spectrum before and after the deposition, the UV enhanced fluorescence film has little effect on it.
【作者單位】： 中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所應(yīng)用光學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;長(zhǎng)春理工大學(xué)光電工程學(xué)院;
【基金】：國(guó)家(863)計(jì)劃項(xiàng)目(2015AA042402) 吉林省自然科學(xué)基金項(xiàng)目(20160101272JC) 吉林省科技發(fā)展計(jì)劃項(xiàng)目(20140201011GX) 國(guó)家自然科學(xué)基金青年基金項(xiàng)目(61504143)資助
【分類(lèi)號(hào)】：TN23

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