Highly Efficient Inkjet-Printed Organic Photovoltaic Cells
- Authors
- Jung, Jaewook; Kim, Donghwan; Lim, Jongsun; Lee, Changjin; Yoon, Sung Cheol
- Issue Date
- 5월-2010
- Publisher
- IOP PUBLISHING LTD
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.49, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 49
- Number
- 5
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/116538
- DOI
- 10.1143/JJAP.49.05EB03
- ISSN
- 0021-4922
- Abstract
- In this article, we report the development of inkjet printing technique for the fabrication of bulk heterojunction organic photovoltaic cells (OPVs). We have demonstrated highly efficient OPV with a mixture of poly(3-hexylthiophene)s (P3HT) and 1-[3-(methoxycarbonyl) propyl]-1-phenyl[6.6]C61 (PCBM) as an inkjet-printed photoactive layer. Especially, 3.8% of power conversion efficiency (PCE) and 0.68 V of open circuit voltage (V-oc) can be obtained by using the chlorobenzene as a solvent. This value is the highest performance in P3HT: PCBM based OPV system by now. We reveal that substantial improvements can be realized by nano-structured heterojunction after inkjet printing and this technique is one of the promising fabrication methods for organic photovoltaic cells. Also, we have designed and fabricated five-series connected large area (18cm(2)) inkjet-printed OPVs using the patterned indium tin oxide (ITO) with Au bus-electrode to minimize the efficiency drop due to the surface resistance of ITO. Consequently, 1.25% of power conversion efficiency can be obtained with a short circuit current of 1.24 mA/cm(2), a fill factor of 0.32, and an open circuit voltage of 3.2 V. (C) 2010 The Japan Society of Applied Physics
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