【摘 要】
:
Recently,graphene quantum dots (GQDs) has gained much attention to develop its applications in varies fields and many efforts have been made to exploit the optoeletronic properties which is important
【机 构】
:
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, J
论文部分内容阅读
Recently,graphene quantum dots (GQDs) has gained much attention to develop its applications in varies fields and many efforts have been made to exploit the optoeletronic properties which is important to improve the efficiency of photovoltaic devices owning to its tunable band gap depending on size and chemical functionality.Moreover,GQDs exhibit a good dispersity in many solvents which makes it solution-processable in various solutions.
其他文献
基于量子点(QDs)的多激子效应、高消光系数、带隙可调等优点,量子点敏化太阳能电池(QDSCs)在近些年被广泛研究.然而,目前转换效率高的QDSCs器件大多由铜片腐蚀而得到的Cu2S对电极组装而成,但它的稳定性差,虽然已有大量基于硫化物,如CuS催化材料的对电极被研究与报道,但仍然无法获得可超越的电池转换效率及稳定性.
CdS和CdSe量子点常共同用于量子点敏化太阳能电池(QDSSC:s)中,共同敏化提高电池效率.在CdS/CdSe QDSSCs中,CdS量子点通常沉积在TiO2薄膜上作为中间层,以促进后续CdSe量子点的沉积.SILAR法是一种常用的沉积CdS量子点中间层的方法,通过在CdS前驱体溶液中加入三乙醇胺(TEA)添加剂改进的SILAR法,得到的CdS中间层再沉积CdSe可以有效提高CdS/CdSe
半导体氧化物,如二氧化钛、氧化锌,在光电转换领域具有极大的应用潜力和前景.通过纳米结构设计的二氧化钛和氧化锌,因其巨大的比表面积和强的光散射性能,而具有很高的量子点吸附能力和光子捕捉能力,非常适于制备高效率的量子点敏化太阳能电池.但是,这种具有大比表面积的纳米结构存在界面缺陷多、电荷传输路径长等缺点,造成电子与空穴复合严重,导致太阳能电池效率下降.
Up to now,almost all early transition metal compounds (TMCs) have been developed as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs).Catalytic activity is determined by the electronic st
In traditional dye-sensitized solar cells (DSCs) system,counter electrodes (CEs) catalyst usually is precious metal platinum (Pt),which is playing important role in catalyzing I3 - ions reduction in e
As a represent of green solar energy conversion devices,dye-sensitized solar cells (DSCs) have increasingly achieved advances in power conversion efficiency (PCE) during the last two decades.Counter e
Dye-sensitized solar cells (DSSCs) have attracted the most attention due to their unparalleled merits.Over the past 20 years,remarkable advances in DSSCs have been achieved.To date,various counter ele
小分子体异质结太阳能电池的性能与其薄膜的形貌,电荷产生,传输等是紧密相关的.我们制备了以DR3TSBDT:PC71BM 为有源层的小分子体异质结太阳能电池,来探究溶剂添加剂(DIO)对调控薄膜的形貌,加快电荷产生效率等方面的影响.不经过热退火,溶剂熏蒸等处理手段,器件的能量转换效率可以达到8.86%,这要高于文献目前报道的相同条件下的器件的能量转换效率(6.62%).通过采用溶剂添加剂的方法,其能
随着有机半导体材料的发展,有机光电探测器由于易制备、柔性等优点,近年来越来越受到关注.目前所报道的光电探测器多为二极管型光探测器,其显著的特点是外量子效率(EQE)小于100%,因此在实际使用中需要外置放大电路放大微弱的光生电流,这无疑会限制其应用范围且增加系统成本.
自1991年,Gr(a)tzel课题组首次使用多孔TiO2薄膜制备高效率染料敏化太阳能电池以来,多孔TiO2薄膜被广泛用于染料敏化太阳能电池中.重现性强的丝网印刷法适合于大规模生产高性能介孔TiO2薄膜,但由于一次性印刷难以得到一定厚度的TiO2薄膜,使用的TiO2薄膜一般通过多次印刷得到.