Electrical rectification |
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| Authors: | Sudipta Dutta Swapan K Pati |
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| Institution: | 1. Theoretical Sciences Unit and DST Unit on Nanoscience, Jawaharlal Nehru Center for Advanced Scientific Research Jakkur Campus, Bangalore, 560 064, India
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| Abstract: | Owing to the saturation of the efficiency of silicon devices in electronics industry, molecular electronics has gained tremendous
impetus in recent times. Theoretical predictions and experimental realizations of such systems have given birth to a new generation
of miniaturized electronic devices. Organic molecules with delocalized π-electrons show a promising future in this aspect.
The long-standing history and interesting properties of two isomeric organic molecules, naphthalene and azulene, motivate
us to explore their electrical conductance property and possible electronic device applications that exploit the unique characteristics
associated with their structural aspects. Single molecule of azulene shows higher conductivity than naphthalene. The charge
transfer from the seven-membered ring to the five-membered ring in azulene gives the system aromatic stability, making it
dipolar. As a consequence, the conductance becomes asymmetric for forward and reverse bias, opening an efficient application
of azulene as molecular rectifier in electronic device fabrication. |
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