Electronic structure and chemical reaction of Ca deposition on regioregular poly(3-hexylthiophene) surfaces

作     者：ZHAO Wei GUO YuXian FENG XueFei ZHANG Liang ZHANG WenHua ZHU JunFa 

作者机构：National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2009年第54卷第11期

页      面：1978-1982页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 082304[工学-载运工具运用工程] 08[工学] 0817[工学-化学工程与技术] 080204[工学-车辆工程] 0703[理学-化学] 0802[工学-机械工程] 0823[工学-交通运输工程] 

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 20773111) Scientific Research Foundation for Returned Scholars,Ministry of Education of China Program for New Century Excellent Talents in University (NCET) Start-up Funding of the University of Science and Technology of China 

主　　题：化学反应 表面清洁 电子结构 钙沉积 X射线光电子光谱 同步辐射光电子能谱 X射线光电子能谱 共轭聚合物 

摘      要：Conjugated polymer, regioregular poly(3-hexylthiophene) (rr-P3HT), films were prepared by spin-coating the rr-P3HT chloroform solution onto clean silicon wafer surfaces. The chemical re-action and electronic structure of Ca deposition on rr-P3HT surfaces were in situ investigated by synchrotron radiation photoemission spectroscopy (SRPES) and X-ray photoemission spectros-copy (XPS). Upon Ca deposition, Ca-induced band bending of rr-P3HT is observed. In addition, Ca atoms preferentially react with S atoms of rr-P3HT. No obvious reaction between Ca and C atoms can be found. Through the investigation of the evolution of valence band spectra and secondary electron cut-off of rr-P3HT during the process of Ca deposition, an energy level alignment diagram at the Ca/rr-P3HT interface is derived.