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首页> 外文期刊>Journal of Applied Polymer Science >Poly(butyl acrylate) polymer enhanced phase segregation and morphology of organic semiconductor for solution-processed thin film transistors
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Poly(butyl acrylate) polymer enhanced phase segregation and morphology of organic semiconductor for solution-processed thin film transistors

机译：聚（丙烯酸丁酯）聚合物增强的溶液加工薄膜晶体管有机半导体的相偏析和形态

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The phase segregation as a result of mixing organic semiconductors with polymeric additives has been reported as an intriguing avenue to optimize semiconductor crystal microstructure, active layer composition and charge carrier transport. In this work, we report the mixing of organic semiconductor 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene) with poly(butylacrylate) as a polymer additive to control the semiconductor crystal growth and morphology. The incorporation of poly(butylacrylate) induces a vertical phase segregation but a more predominant lateral phase segregation with TIPS pentacene. Along with a solvent vapor annealing technique, poly(butylacrylate) evenly distributes the semiconductor nuclei on the polymer matrix, and results in organic crystal with enlarged grain width. In addition, the randomized crystal growth of TIPS pentacene has been significantly reduced, giving rise to a 25-fold decrease in misorientation angle. The bottom-gate, top-contact thin film transistors with the poly(butylacrylate)/TIPS pentacene mixture as the active layer demonstrated an improved hole mobility of 0.11 cm(2)/Vs. We believe the phase segregation induced by the poly(butylacrylate) polymer as well as the solvent vapor annealing method as reported in this work can be facilely replicated on other organic semiconductors to realize high performance organic electronic device applications.
机译：有机半导体与聚合物添加剂混合产生的相分离已被报道为优化半导体晶体微观结构、活性层组成和电荷载流子输运的有趣途径。在这项工作中，我们报道了有机半导体6,13-二（三异丙基硅炔基）并五苯（TIPS-并五苯）与聚（丙烯酸丁酯）作为聚合物添加剂的混合，以控制半导体晶体的生长和形态。聚（丙烯酸丁酯）的加入会导致垂直相分离，但与五苯尖端的横向相分离更为明显。通过溶剂蒸汽退火技术，聚（丙烯酸丁酯）将半导体核均匀地分布在聚合物基体上，从而形成晶粒宽度增大的有机晶体。此外，TIPS并五苯的随机晶体生长显著减少，导致取向角减少25倍。底门，以聚丙烯酸丁酯/TIPS-并五苯混合物为活性层的顶部接触薄膜晶体管的空穴迁移率提高了0.11 cm（2）/Vs。我们相信，聚丙烯酸丁酯聚合物以及本工作中报告的溶剂蒸汽退火方法引起的相分离可以很容易地复制到其他有机半导体上，以实现高性能有机电子器件应用。

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