Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 3, Issue 39, Pages 10070-10073Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc01856k
Keywords
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Funding
- NSFC [21274134, 21274161, 51173199, 61107090]
- Ministry of Science and Technology of China [2014CB643501, 2010DFA52310]
- Postdoctoral Science Foundation of China [XJ2012042, 2013M530329]
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Dopant-free poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b; 4,5-b']dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b] thiophene)-2,6-diyl] (PBDTTT-C) polymer is used as hole transporting material (HTM) in electron transporting material (ETM) free planar perovskite solar cells (PSCs). The devices with a PBDTTT-C HTM show higher power conversion efficiency (PCE = 9.95%) than the devices with a P3HT HTM (PCE = 6.17%) with enhanced short circuit current density (J(sc)), open circuit voltage (V-oc) and fill factor (FF) in a simple device configuration (ITO/CH3NH3PbI3/PBDTTT-C/MoO3/Ag), due to the suitable energy level, better carrier mobility and lower interfacial charge recombination.
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