【作者】 冯艳玲； 左启琪； 王家瑞； 周剑章； 肖宗源； 田中群； 毛秉伟；

【Author】 YanLing Feng;QiQi Zuo;JiaRui Wang;JianZhang Zhou;ZongYuan Xiao;BingWei Mao;State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chem. & Chem.Eng.,xiamen univ.;

【机构】 厦门大学化学化工学院,固体表面物理化学国家重点实验室；

【摘要】 当前,基于钙钛矿CH3NH3PbX3(X代表卤族元素)的全固态太阳能电池效率迅速提高至15%[1]以上,受到研究者的高度关注。这种太阳能电池性具有制备工艺简单且转换效率较高的优点。在钙钛矿光吸收层中掺杂Au@SiO2纳米粒子能够改善其性能[2]。近来,理论上推测TiO2与钙钛矿界面存在化学键作用,但是实验上并没有给出明确证据。壳层隔绝纳米粒子增强拉曼光谱(SHINERS)能有效地增强待测物质的拉曼信号,并且能够对分子间作用进行有力表征。基于此,我们利用活性壳层纳米粒子(Ag@TiO2)与钙钛矿构成界面,进而表征此界面处二者之间的作用。更多还原

【Abstract】 Recently, a type of solar cell based on perovskite CH3NH3PbX3(X represents the halogen element) aroused tremendous attention. This kind of cell has the advantages of simple preparation technology and higher conversion efficiency. Doping Au @ SiO2 nanoparticles in the optical absorption layer of perovskite solar cells can significantly improve the cell performance. It had been pointed out that there exists chemical bond between TiO2 and perovskite interface. However, there is no evidence from experiment investigation. Shell isolated nanoparticle enhanced Raman spectroscopy(SHINERS) can effectively enhance the Raman signal of the unknown material. Our work employs Ag @ TiO2 nanoparticles, where the TiO2 thin layer serves as an active shell layer, for Raman spectroscopic investigation of the interface between the TiO2 and perovskite.更多还原