本文關(guān)鍵詞：稀土摻雜的上轉(zhuǎn)換發(fā)光薄膜材料制備及應(yīng)用　出處：《浙江大學(xué)》2015年博士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 太陽(yáng)能電池 電化學(xué)沉積 上轉(zhuǎn)換發(fā)光 復(fù)合薄膜

【摘要】：經(jīng)濟(jì)的發(fā)展也伴隨著能源的不斷消耗。近年來(lái),自然資源短缺,能源危機(jī),環(huán)境污染等問(wèn)題的不斷加劇,發(fā)光材料研究重點(diǎn)也逐漸向生物,清潔能源方向轉(zhuǎn)變。太陽(yáng)能做為清潔可持續(xù)綠色能源的之一而受到人們的廣泛關(guān)注,而通常太陽(yáng)能電池材料,如二氧化鈦、氧化亞銅、氧化鋅、碘氧化鉍等,因?yàn)槠浣麕挾却蠖荒芾锰?yáng)光中的近紅外光,我們可以利用稀土離子上轉(zhuǎn)換發(fā)光特點(diǎn),與半導(dǎo)體材料結(jié)合,拓展太陽(yáng)能電池的響應(yīng)范圍。本文就是在上轉(zhuǎn)換發(fā)光材料及上轉(zhuǎn)換發(fā)光與半導(dǎo)體材料復(fù)合,實(shí)現(xiàn)近紅外光響應(yīng)的復(fù)合薄膜電池方面開(kāi)展了相關(guān)研究。薄膜電池在太陽(yáng)能電池成本減少上具有一定的優(yōu)勢(shì),而電沉積法制備薄膜因?yàn)槌杀镜?可曲面生長(zhǎng),條件溫和、易控制等特點(diǎn),有利于實(shí)現(xiàn)大規(guī)模的工業(yè)生產(chǎn)。本論文在電化學(xué)法制備材料的基礎(chǔ)上,結(jié)合太陽(yáng)能電池應(yīng)用需求及待解決的問(wèn)題,針對(duì)性的進(jìn)行了相關(guān)研究,提出了一些觀點(diǎn),并進(jìn)行了初步的應(yīng)用探索,具體包括如下五部分：1、采用陰極電沉積法和后續(xù)熱處理制備了Yb3+-Er3+共摻雜的的氧化釔薄膜,并討論了該薄膜在980nm激光器激發(fā)下的上轉(zhuǎn)換發(fā)光性能,對(duì)電沉積的相關(guān)參數(shù),溫度、濃度、時(shí)間、等進(jìn)行優(yōu)化,找到最優(yōu)的上轉(zhuǎn)換紅光薄膜Y203: 3% Yb3+-1%Er3+的制備條件。2、我們采用陽(yáng)極電沉積技術(shù)首次合成了Yb3+-Tm3+共摻雜NaYF4薄膜,并通過(guò)XRD,TG-TDA,SEM對(duì)薄膜進(jìn)行表征,對(duì)影響薄膜光學(xué)性能進(jìn)行研究。在980 nm激光器激發(fā)下,該薄膜內(nèi)由Yb3+吸收980nm光子能量,傳能給Tm3+, Tm3+產(chǎn)生強(qiáng)烈上轉(zhuǎn)換發(fā)光3、利用電化學(xué)法和離子交換法相結(jié)合,制備出(Y2O3:Yb3+-Er3+)/Bi2S3復(fù)合薄膜,Y2O3:Yb3+-Er3+薄膜在980nm激光器激發(fā)上轉(zhuǎn)換產(chǎn)生可見(jiàn)光,然后被Bi2S3納米顆粒吸收,最后產(chǎn)生光電流。并在溶液體系內(nèi),演示該復(fù)合薄膜的光電流響應(yīng)。4、通過(guò)電化學(xué)法制備出(NaYF4:Yb3+-Tm3+)/Cu20復(fù)合薄膜,并通過(guò)光學(xué)性能測(cè)試證明了復(fù)合薄膜中可能的傳能機(jī)理是：近紅外光激發(fā)NaYR:Yb3+-Tm3+產(chǎn)生可見(jiàn)光,被氧化亞銅薄膜吸收,產(chǎn)生光電流,并在980 nm激光器和氙燈激發(fā)下,對(duì)該復(fù)合薄膜的光電流響應(yīng)進(jìn)行演示。5.(NaYF4:Yb3+-Er3+)/BiIO復(fù)合薄膜是先通過(guò)電化學(xué)法制備NaYFd: Yb3+-Er3+薄膜,然后利用離子交換法使BiIO與NaYF4:Yb3+-Er3+薄膜復(fù)合。該復(fù)合薄膜在聚焦的氙燈的近紅外光照射下,NaYF4:Yb3+-Er3+通過(guò)上轉(zhuǎn)換產(chǎn)生可見(jiàn)光,然后被半導(dǎo)體材料碘氧化鉍吸收,產(chǎn)生光電流。
[Abstract]:In recent years, with the shortage of natural resources, energy crisis, environmental pollution and other problems, the research focus of luminescent materials has gradually turned to biology. The direction of clean energy. Solar energy as one of the clean and sustainable green energy has been widely concerned, but usually solar cell materials, such as titanium dioxide, cuprous oxide, zinc oxide, bismuth iodide and so on. Because the band gap is too wide to utilize the near-infrared light in the sun, we can combine the rare earth ions with semiconductor materials by using the characteristics of up-conversion luminescence of rare earth ions. Expand the response range of solar cells. This paper is in the upconversion of luminescent materials and up-conversion luminescence and semiconductor materials composite. Some researches have been carried out on the near-infrared photo-responsive composite thin film battery. The thin film battery has some advantages in reducing the cost of solar cells, while the electrodeposition method can grow the thin film surface because of its low cost. The conditions are mild and easy to control, which is conducive to the realization of large-scale industrial production. In this paper, on the basis of electrochemical preparation of materials, combined with the application of solar cells and the problems to be solved. Relevant research has been carried out, some viewpoints have been put forward, and preliminary application has been explored, including the following five parts: 1. Yb3 er 3 co-doped yttrium oxide thin films were prepared by cathodic electrodeposition and heat treatment. The upconversion luminescence properties of the films excited by 980nm laser were discussed. The parameters, temperature, concentration, time and so on of electrodeposition were optimized to find the optimal preparation conditions of Y203: 3% Yb3 -1 Er3. Yb3 Tm 3 co-doped NaYF4 thin films were synthesized by anodic electrodeposition for the first time and characterized by XRDX TG-TDA SEM. Under the excitation of 980nm laser, the Yb3 absorbs 980nm photon energy and transmits energy to Tm3. Tm3 produced a strong up-conversion luminescence 3. The Y _ 2O _ 3: Yb _ 3-er _ 3 / Bi _ 2S _ 3 composite films were prepared by the combination of electrochemical method and ion exchange method. Y2O3: Yb3-Er3 film is excited by a 980nm laser to produce visible light, then absorbed by Bi2S3 nanoparticles, resulting in photocurrent. The photocurrent-response of the composite film was demonstrated. The NaYF4: Yb3-Tm3 / Cu20 composite film was prepared by electrochemical method. The possible mechanism of energy transfer in the composite films was proved by optical properties test: near infrared light excited NaYR:Yb3 Tm 3 to produce visible light, was absorbed by cuprous oxide thin film, resulting in photocurrent. And excited by 980nm laser and xenon lamp. The photocurrent response of the composite film was demonstrated. 5. NaYF4: Yb3-Er3). First, NaYFd: Yb3-Er3 thin films were prepared by electrochemical method. Then the BiIO and NaYF4:Yb3-Er3 films were compounded by ion exchange method. The composite films were irradiated by the near-infrared light of the focused xenon lamp. NaYF4:Yb3-er 3 produces visible light by up-conversion and then is absorbed by bismuth iodide semiconductor material to produce photocurrent.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.2

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