Thin-film growth behavior of non-planar vanadium oxide phthalocyanine  

作　　者：Tian-Jiao Liu Hua-Yan Xia Biao Liu Mei Fang Jun-Liang Yang 刘天娇;夏华艳;刘标;Tim S Jones;方梅;阳军亮(Hunan Key Laboratory for Super-microstructure and Ultrafast Process,School of Physics and Electronics,Central South University,Changsha 410083,China;Department of Chemistry,University of Warwick,Coventry,CV47AL,United Kinedom)

机构地区：[1]Hunan Key Laboratory for Super-microstructure and Ultrafast Process,School of Physics and Electronics,Central South University,Changsha 410083,China [2]Department of Chemistry,University of Warwick,Coventry,CV47AL,United Kinedom

出　　处：《Chinese Physics B》2019年第8期369-375,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.51673214);the National Key Research and Development Program of China(Grant No.2017YFA0206600)

摘　　要：The thin film properties of organic semiconductors are very important to the device performance.Herein,non-planar vanadyl phthalocyanine(VOPc)thin films grown on rigid substrates of indium tin oxide,silicon dioxide,and flexible substrate of kapton by organic molecular beam deposition under vacuum conditions are systematically studied via atomic force microscopy and x-ray diffraction.The results clearly reveal that the morphology and grain size are strongly dependent on the substrate temperature during the process of film deposition.Meanwhile,the VOPc films with the structure of phase I or phase II can be modulated via in situ annealing and post-annealing temperature.Furthermore,the crystalline structure and molecular orientation of vapor-deposited VOPc can be controlled using molecular template layer 3,4,9,10-perylenetetracarboxylic dianhydride(PTCDA),the VOPc film of which exhibits the phase I structure.The deep understanding of growth mechanism of non-planar VOPc film provides valuable information for controlling structure-property relationship and accelerates the application in electronic and optoelectronic devices.The thin film properties of organic semiconductors are very important to the device performance. Herein, non-planar vanadyl phthalocyanine(VOPc) thin films grown on rigid substrates of indium tin oxide, silicon dioxide, and flexible substrate of kapton by organic molecular beam deposition under vacuum conditions are systematically studied via atomic force microscopy and x-ray diffraction. The results clearly reveal that the morphology and grain size are strongly dependent on the substrate temperature during the process of film deposition. Meanwhile, the VOPc films with the structure of phase I or phase II can be modulated via in situ annealing and post-annealing temperature. Furthermore, the crystalline structure and molecular orientation of vapor-deposited VOPc can be controlled using molecular template layer 3, 4, 9, 10-perylenetetracarboxylic dianhydride(PTCDA), the VOPc film of which exhibits the phase I structure. The deep understanding of growth mechanism of non-planar VOPc film provides valuable information for controlling structure-property relationship and accelerates the application in electronic and optoelectronic devices.

关 键 词：ORGANIC SEMICONDUCTOR thin film VANADYL phthalocyanine(VOPc) growth BEHAVIOR 

分 类 号：O4[理学—物理]