Nanostructured TiO2/CH3NH3PbI3 heterojunction solar cells employing spiro-OMeTAD/Co-complex as hole-transporting material
- Authors
- Noh, JH[Noh, Jun Hong]; Jeon, NJ[Jeon, Nam Joong]; Choi, YC[Choi, Yong Chan]; Nazeeruddin, MK[Nazeeruddin, Md. K.]; Gratzel, M[Graetzel, Michael]; Seok, SI[Seok, Sang Il]
- Issue Date
- 2013
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.1, no.38, pp.11842 - 11847
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 1
- Number
- 38
- Start Page
- 11842
- End Page
- 11847
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/62475
- DOI
- 10.1039/c3ta12681a
- ISSN
- 2050-7488
- Abstract
- For using 2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD) as a hole conductor in solar cells, it is necessary to improve its charge-transport properties through electrochemical doping. With the aim of fabricating efficient mesoscopic TiO2/CH3NH3PbI3 heterojunction solar cells, we used tris[2-(1H-pyrazol-1-yl)-4-tert-butylpyridine)cobalt(III) tris(bis(trifluoromethylsulfonyl) imide)] (FK209) as a p-dopant for spiro-OMeTAD. The mixture of spiro-OMeTAD, FK209, lithium bis(trifluoromethylsulfonyl)imide (Li-TFSI), and 4-tert-butylpyridine (TBP) exhibited significantly higher performance than mixtures of pristine spiro-OMeTAD, spiro-OMeTAD, and FK209, and spiro-OMeTAD, Li-TFSI, and TBP. Such a synergistic effect between the Co-complex and Li-TFSI in conjunction with spiro-OMeTAD effectively improved the power conversion efficiency (PCE) of the fabricated solar cells. As a result, we achieved PCE of 10.4%, measured under standard solar conditions (AM 1.5G, 100 mW cm(-2)).
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Collections - Graduate School > Energy Science > 1. Journal Articles
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