本文選題：量子點(diǎn)　切入點(diǎn)：紅外　出處：《應(yīng)用光學(xué)》2017年05期

【摘要】：半導(dǎo)體量子點(diǎn)具有獨(dú)特的光學(xué)與電學(xué)性質(zhì),特別是紅外量子點(diǎn)良好的光穩(wěn)定性和生物相容性等優(yōu)點(diǎn)使其在光電器件、生物醫(yī)學(xué)等領(lǐng)域受到廣泛關(guān)注。綜述了吸收或發(fā)射光譜位于紅外波段的量子點(diǎn)在激光、能源、光電探測以及生物醫(yī)學(xué)等方面的應(yīng)用現(xiàn)狀與前景,歸納了適用于紅外量子點(diǎn)材料的制備方法,并對比了不同方法在應(yīng)用中的優(yōu)勢。半導(dǎo)體紅外量子點(diǎn)材料選擇豐富、應(yīng)用形式多樣:InAs量子點(diǎn)被動(dòng)鎖模激光器在1.3μm波長處產(chǎn)生7.3GHz的近衍射極限脈沖輸出;InAs/GaAs量子點(diǎn)雙波長激光器可泵浦產(chǎn)生0.6nW的THz波;PbS量子點(diǎn)摻雜光纖放大器可在1.53μm中心波長處實(shí)現(xiàn)10.5dB光增益,帶寬160nm;CdSeTe量子點(diǎn)敏化太陽能電池、異質(zhì)結(jié)Si基量子點(diǎn)太陽能電池的總轉(zhuǎn)換效率可達(dá)8%和14.8%;膠質(zhì)HgTe量子點(diǎn)制成的量子點(diǎn)紅外探測器(QDIP)可實(shí)現(xiàn)3μm~5μm中波紅外探測,Ge/Si量子點(diǎn)可實(shí)現(xiàn)3μm~7μm紅外探測;CdTe/ZnSe核殼量子點(diǎn)可用于檢測DNA序列的損傷與突變。半導(dǎo)體紅外量子點(diǎn)上述應(yīng)用形式的發(fā)展,將進(jìn)一步促進(jìn)紅外光電系統(tǒng)向高效、快速、大規(guī)模集成的方向演進(jìn),也將極大地促進(jìn)臨床醫(yī)學(xué)中活體成像檢測的應(yīng)用推廣。
[Abstract]:Semiconductor quantum dots have unique optical and electrical properties, especially the excellent optical stability and biocompatibility of infrared quantum dots. In this paper, the applications and prospects of infrared quantum dots with absorption or emission spectrum in the fields of laser, energy, photoelectric detection and biomedicine are reviewed. The preparation methods suitable for infrared quantum dot materials are summarized, and the advantages of different methods in application are compared. Using multiple forms of passive mode-locked quantum dots to generate 7.3GHz at 1.3 渭 m wavelength, InAs-GaAs quantum dot double wavelength laser can pump THz wave and PBS quantum dot-doped fiber amplifier at 1.53 渭 m center. 10.5dB optical gain is realized at the wavelength, The bandwidth is 160 nm and CdSeTe quantum dots sensitized solar cells, The total conversion efficiency of heterojunction Si-based quantum dots solar cells can reach 8% and 14.8.The quantum dot infrared detector made of colloidal HgTe quantum dots can realize 3 渭 m ~ 5 渭 m ~ (5 渭 m) medium-wave infrared detection and 3 渭 m ~ (7) 渭 m ~ (7 渭 m) infrared detection of CdTe / ZnSe core / shell quantum dots. It can be used to detect the damage and mutation of DNA sequence. It will further promote the development of infrared photovoltaic system to the direction of high efficiency, fast and large-scale integration, and will greatly promote the application of in vivo imaging detection in clinical medicine.
【作者單位】： 北京信息科技大學(xué);
【分類號】：TB383.1;TN304

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本文編號：1674145