Nanoscale direct mapping of localized and induced noise sources on conducting polymer films
作者： Shashank Shekhar , Duckhyung Cho , Hyungwoo Lee , Dong-guk Cho , Seunghun Hong
DOI: 10.1039/C5NR06896G
关键词:
摘要: The localized noise-sources and those induced by external-stimuli were directly mapped using a conducting-AFM integrated with custom-designed noise measurement set-up. In this method, current images of poly(9,9-dioctylfluorene)-polymer-film on conducting-substrate recorded simultaneously, enabling the mapping resistivity source density (NT). polymer-films exhibited separate regions high or low resistivities, which attributed to ordered disordered phases, respectively. A larger number observed in disordered-phase-regions than ordered-phase regions, due structural disordering. Increased bias-voltages resulted increased NT, is explained deformation at bias-voltages. On photo-illumination, ordered-phase-regions rather large increase conductivity NT. Presumably, illumination released carriers from deep-traps should work as additional noise-sources. These results show that our methods provide valuable insights into and, thus, can be powerful tools for basic research practical applications conducting polymer films.
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Moon Gyu Sung, Hyungwoo Lee, Kwang Heo, Kyung-Eun Byun, Taekyeong Kim, David H. Seo, Sunae Seo, Seunghun Hong, Scanning noise microscopy on graphene devices. ACS Nano. ,vol. 5, pp. 8620- 8628 ,(2011) , 10.1021/NN202135G
Bencai Lin, Lihua Qiu, Bo Qiu, Yu Peng, Feng Yan, A Soluble and Conductive Polyfluorene Ionomer with Pendant Imidazolium Groups for Alkaline Fuel Cell Applications Macromolecules. ,vol. 44, pp. 9642- 9649 ,(2011) , 10.1021/MA202159D
Dany Lachance-Quirion, Samuel Tremblay, Sébastien A. Lamarre, Vincent Méthot, Daniel Gingras, Julien Camirand Lemyre, Michel Pioro-Ladrière, Claudine Nì. Allen, Telegraphic noise in transport through colloidal quantum dots. Nano Letters. ,vol. 14, pp. 882- 887 ,(2014) , 10.1021/NL404247E
A. A. Kaverzin, A. S. Mayorov, A. Shytov, D. W. Horsell, Impurities as a source of 1/f noise in graphene Physical Review B. ,vol. 85, pp. 075435- ,(2012) , 10.1103/PHYSREVB.85.075435
A. Carbone, B. K. Kotowska, D. Kotowski, Space-Charge-Limited Current Fluctuations in Organic Semiconductors Physical Review Letters. ,vol. 95, pp. 236601- ,(2005) , 10.1103/PHYSREVLETT.95.236601
Olga Bubnova, Zia Ullah Khan, Hui Wang, Slawomir Braun, Drew R Evans, Manrico Fabretto, Pejman Hojati-Talemi, Daniel Dagnelund, Jean-Baptiste Arlin, Yves H Geerts, Simon Desbief, Dag W Breiby, Jens W Andreasen, Roberto Lazzaroni, Weimin M Chen, Igor Zozoulenko, Mats Fahlman, Peter J Murphy, Magnus Berggren, Xavier Crispin, None, Semi-metallic polymers Nature Materials. ,vol. 13, pp. 190- 194 ,(2014) , 10.1038/NMAT3824
Maxime Ranger, Mario Leclerc, New Base-Doped Polyfluorene Derivatives Macromolecules. ,vol. 32, pp. 3306- 3313 ,(1999) , 10.1021/MA981443E
Shashank Shekhar, Eyal Aharon, Nan Tian, Frank Galbrecht, Ullrich Scherf, Elisabeth Holder, Gitti L. Frey, Decoupling 2D inter- and intrachain energy transfer in conjugated polymers. ChemPhysChem. ,vol. 10, pp. 576- 581 ,(2009) , 10.1002/CPHC.200800579
F N Hooge, T G M Kleinpenning, L K J Vandamme, Experimental studies on 1/f noise Reports on Progress in Physics. ,vol. 44, pp. 479- 532 ,(1981) , 10.1088/0034-4885/44/5/001
Jean Luc Bredas, G. Bryan Street, Polarons, bipolarons, and solitons in conducting polymers Accounts of Chemical Research. ,vol. 18, pp. 309- 315 ,(1985) , 10.1021/AR00118A005