Device fabrication of insoluble donor–acceptor–donor structured molecule by pulsed laser deposition: a comparative study using different laser source

Swathi S. K.; Arun D. Rao; Ranjith K.; Rajneesh Kumar; S. A. Ramakrishna; Praveen C. Ramamurthy

doi:10.1117/12.2020753

22 June 2013 Device fabrication of insoluble donor–acceptor–donor structured molecule by pulsed laser deposition: a comparative study using different laser source

Swathi S. K., Arun D. Rao, Ranjith K., Rajneesh Kumar, S. A. Ramakrishna, Praveen C. Ramamurthy

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Proceedings Volume 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013); 876933 (2013) https://doi.org/10.1117/12.2020753
Event: International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 2013, Singapore, Singapore

Abstract

Many of the conducting polymers though having good material property are not solution processable. Hence an alternate method of fabrication of film by pulsed laser deposition, was explored in this work. PDTCPA, a donor- acceptor- donor type of polymer having absorption from 900 nm to 300 nm was deposited by both UV and IR laser to understand the effect of deposition parameters on the film quality. It was observed that the laser ablation of PDTCPA doesn’t alter its chemical structure hence retaining the chemical integrity of the polymer. Microscopic studies of the ablated film shows that the IR laser ablated films were particulate in nature while UV laser ablated films are deposited as smooth continuous layer. The morphology of the film influences its electrical characteristics as current- voltage characteristic of these films shows that films deposited by UV laser are p rectifying while those by IR laser are more of resistor in nature.

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Swathi S. K., Arun D. Rao, Ranjith K., Rajneesh Kumar, S. A. Ramakrishna, and Praveen C. Ramamurthy "Device fabrication of insoluble donor–acceptor–donor structured molecule by pulsed laser deposition: a comparative study using different laser source", Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 876933 (22 June 2013); https://doi.org/10.1117/12.2020753

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KEYWORDS

Nd:YAG lasers

Laser ablation

Polymers

Ultraviolet radiation

Pulsed laser deposition

Infrared lasers

Molecules

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