کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1678514 1009944 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of the electrical and optical properties of viologen devices using chlorophyll a as an electron excimer
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Characterization of the electrical and optical properties of viologen devices using chlorophyll a as an electron excimer
چکیده انگلیسی

This paper uses self-assembled monolayers (SAMs) on an Au(111) substrate to detect the unique characteristics of viologen molecules using scanning tunneling microscopy (STM), and reports the orientation and surface changes of molecules at the nanolevel in real-time. In particular, the rectification characteristics of the viologen molecule were observed at the molecular level using scanning tunneling spectroscopy (STS). After verifying the rectification characteristics of viologen molecules, an experiment was carried out to demonstrate the possibility of applying viologen to photodiodes and switching devices by forming a thin film of chlorophyll a on the viologen SAMs using the Langmuir–Blodgett (LB) method. This material mimics the photoinduced electron transport phenomenon in the early stage of photosynthesis in living plants. This study demonstrates the applicability of viologen to bioelectronic photodiodes and switching devices based on photo effects by observing the topography, current sensing, and current–voltage (I–V) characteristics using current-sensing atomic force microscopy (CS-AFM) by introducing light to the AFM-tip/chlorophyll a/viologen/Au(1 1 1) substrate structure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 110, Issue 6, May 2010, Pages 650–654
نویسندگان
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