کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1263700 1496833 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanism for the separation of organic semiconductors via thermal gradient sublimation
ترجمه فارسی عنوان
مکانیسم جداسازی نیمه هادی های آلی از طریق تسریع گرادیان حرارتی
کلمات کلیدی
تصحیح کردن، پاکسازی، الکترونیک ارگانیک، نیمه هادی های آلی، حمل و نقل بخار کم فشار
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی


• Transport and deposition appear to be controlled by molecular diffusion.
• The distribution of deposited material decays exponentially along the sublimation tube.
• Separate molecular species deposit independently of one another.

Two common hole transporting materials, N,N′-di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine (NPD) and tris(4-carbazoyl-9-ylphenyl)amine (TCTA) are separated and purified using thermal gradient sublimation. Their sublimation rates are proportional to the tube diameter squared and inversely proportional to the distance from the source boat to the deposition region. The deposition of these materials exponentially decays with distance down the tube. A theory predicting these results is derived. This theory suggests that diffusion and surface capture are the dominant steps in this purification, not processes in the source boat. It provides a rationale for improving the separation between multiple components and suggests routes for producing larger quantities of these materials.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 24, September 2015, Pages 212–218
نویسندگان
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