Stable growth of large-area single crystalline thin films from an organic semiconductor/polymer blend solution for high-mobility organic field-effect transistors

详细信息    查看全文

• 作者：Junshi Soeda^a ; ^b ; Toshihiro Okamoto^a ; ^c ; ^{tokamoto@k.u-tokyo.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Chikahiko Mitsui^a ; Jun Takeya^a ; ^b ; ^{takeya@k.u-tokyo.ac.jp" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Organic semiconductor/polymer blend ; Single crystalline thin film ; Organic field-effect transistor ; Large-area
• 刊名：Organic Electronics
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：39
• 期：Complete
• 页码：127-132
• 全文大小：1472 K

文摘

We developed an effective and steady solution-processing technique for a small molecule–type semiconductor, C₁₀–DNBDT–NW, by adding an amorphous PMMA polymer to produce stable growth of a two-dimensional large-area single-crystalline thin film by effective phase separation at a crucially faster processing speed compared to the case without the addition of a polymer. By using this solution-processing technique, it is noteworthy that the single-crystalline films of C₁₀–DNBDT–NW/PMMA exhibit the highest and average mobilities of 17 and 10.6 cm²/Vs, respectively. Furthermore, we also show the limitations of two-dimensional continuous growth of a single-crystalline film in terms of the solution technique.