Crystallization Mechanism of 9, 9‐Diphenyl‐dibenzosilole from Solids. Issue 2 (7th January 2020)

• Record Type: Journal Article
• Authors: Li, Mingliang; Wang, Xiaoge; Wang, Guozhi; Ren, Shizhao; Li, Shuo; Wei, Feng; Yan, Shouke; Guo, Xuefeng; Tu, Hailing
• Is Part Of: Chemphyschem. Volume 21:Issue 2(2020)
• Page Start: 181
• Page End: 186
• Publication Date: 2020-01-07
• Subjects: crystallization mechanism -- field-effect transistors -- model -- organic semiconductors -- solid-state crystallization; Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201900925
• Languages: English
• ISSNs: 1439-4235

Abstract

Abstract: Organic semiconductor (OSC) crystals have great potential to be applied in many fields, as they can be flexibly designed according to the demands and show an outstanding device performance. However, OSCs with the capacity of solid‐state crystallization (SSC) are developing too slowly to meet demands in productions and applications, due to their difficulties in molecular design and synthesis, unclear mechanism and high dependence on experimental conditions. In this work, in order to solve the problems, we synthesized an organic semiconductor capable of SSC at room temperature by adjusting the relationship between conjugated groups and functional groups. The thermodynamic and kinetic properties have been studied to discover the model of film SSC. Moreover, it can be purposefully controlled to prepare the high‐quality crystals, and their corresponding organic electronic devices were further fabricated and discussed. Abstract : An organic semiconductor exhibiting solid‐state crystallization (SSC) has been designed and synthesized. Based on thermodynamic and kinetic studies, a two‐steps SSC model is proposed: Stage 1 involves metastable crystal precursors form an amorphous film, whereas in stage 2, the metastable crystals grow into molecular crystals with good morphology.