کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1264047 972098 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Implication of molecular orientation on charge transport and gas sensing characteristics of cobalt–phthalocyanine thin films
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Implication of molecular orientation on charge transport and gas sensing characteristics of cobalt–phthalocyanine thin films
چکیده انگلیسی

Charge transport and gas sensing characteristics of cobalt phthalocyanine films deposited along (ATB) and perpendicular (PTB) to the natural twin boundaries of (0 0 1) LaAlO3 substrate have been investigated. The charge carrier mobility of ATB films (∼5 cm2 V−1 s−1) is five orders of magnitude higher compared to that of PTB films (∼7 × 10−5 cm2 V−1 s−1), suggesting that twin boundaries acts like a template for ordering of molecules. The ATB films on exposure to ammonia showed a reversible increase of resistance, with fast response and recovery. In contrast PTB films showed same sensitivity, but exhibits base resistance drift along with sluggish response.

Figure optionsDownload as PowerPoint slideHighlights
► CoPc films were deposited on LaAlO3 substrates with natural twin boundaries.
► The resistivity of films along twin boundaries is very low compared to perpendicular.
► These films exhibit high sensitivity and fast response/recovery on exposure to ammonia.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 13, Issue 11, November 2012, Pages 2600–2604
نویسندگان
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