期刊
ADVANCED FUNCTIONAL MATERIALS
卷 21, 期 3, 页码 487-493出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201000589
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资金
- National Research Foundation (NRF) of Korea [20090093869]
- Korea Ministry of Knowledge Economy (MKE) [2008-N-PV08-P-01]
- NRF [R15-2008-006-002001-0]
- World Class University (WCU) program at GIST
- MEST of Korea [R31-2008-000-10026-0]
- National Research Foundation of Korea [2008-0093869] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A new film-casting method for polymer electrodes is reported, in which thickness-controlled drop-casting (TCDC), using polyaniline doped with camphorsulfonic acid (PANI:CSA) is used. By combining the advantages of conventional spin-casting and drop-casting methods, and by rigorously controlling the film formation parameters, flexible polymer electrodes with high conductivity and excellent transmittance can be produced. The PANI: CSA electrodes cast by the TCDC method exhibited constant thickness-independent conductivities of similar to 600 S cm(-1) down to a film thickness of 0.2 mu m, and a high optical transmittance of about 85% at 550 nm. Furthermore, the new casting method significantly reduced the sheet resistance (similar to 90 Omega/square) of the PANI: CSA electrodes compared with the conventional spin-cast films, enhancing the performance of the devices deposited on plastic substrates. The flexible polymer light-emitting diode produced a brightness of 6000 cd m(-2), and the flexible polymer solar cell exhibited a power conversion efficiency of 2%, both of which were much higher than those of the devices fabricated by the conventional spin-casting method.
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