【摘要】：以二硫化鉬(MoS_2)為代表的二維過渡金屬硫屬化合物(TMDs)具有隨厚度/層數(shù)變化的光學和電學性質,并且展示出獨特的激子效應和較高的光學量子產(chǎn)率,在光電子器件中具有很好的應用前景。近年來,基于TMDs材料的光學性質和光電子器件的研究進展迅速,如通過電場、化學摻雜、缺陷等方式實現(xiàn)了對其光致發(fā)光(PL)的調(diào)控,并極大地提高了PL發(fā)射量子產(chǎn)率;基于TMDs邊帶異質結和垂直異質結的LEDs被廣泛研究并獲得了較高的光發(fā)射效率;以TMDs作為增益介質,并將其與微盤、光子晶體空腔等耦合實現(xiàn)了低閾值激光發(fā)射。從TMDs的結構和光學性質出發(fā),總結了TMDs材料PL的調(diào)控手段及效果,并介紹TMDs中激光發(fā)射的研究進展,最后對基于TMDs的激光發(fā)展進行了展望。
[Abstract]:The two-dimensional transition metal sulfur compound (TMDs), represented by molybdenum disulfide (MoS_2), has optical and electrical properties varying with the thickness / layer number, and shows unique exciton effect and high optical quantum yield. It has a good application prospect in optoelectronic devices. In recent years, based on the optical properties of TMDs materials and the research progress of optoelectronic devices, such as electric field, chemical doping, defects and other ways to achieve the photoluminescence (PL) control, and greatly improve the quantum yield of PL emission. The LEDs based on TMDs sideband heterojunction and vertical heterojunction has been extensively studied and high optical emission efficiency has been obtained. TMDs is used as gain medium and coupled with microdisk and photonic crystal cavity to achieve low threshold laser emission. Based on the structure and optical properties of TMDs, the control methods and effects of TMDs material PL are summarized, and the research progress of laser emission in TMDs is introduced. Finally, the development of laser based on TMDs is prospected.
【作者單位】： 東南大學物理系;
【基金】：國家自然科學基金(61422503,61376104) 中央高校基本科研業(yè)務費專項資金(3207026405)
【分類號】：TN204

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