Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 15, Issue 6, Pages 1788-1792Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp44468b
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Funding
- Korea Institute of Materials Science [2012-PNK2860]
- Korea Institute of Energy Technology Evaluation and Planning [20113010010030, 20103020010050]
- National Research Foundation of Korea [2011-0014709]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20103020010050, 20113010010030] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Council of Science & Technology (NST), Republic of Korea [PNK3290] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2011-0014709] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We report the origin of the improvement of the power conversion efficiency (PCE) of hybrid thin-film solar cells when a soluble C-60 derivative, [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM), is introduced as a hole-blocking layer. The PCBM layer could establish better interfacial contact by decreasing the reverse dark-saturation current density, resulting in a decrease in the probability of carrier recombination. The PCE of this optimized device reached a maximum value of 8.34% and is the highest yet reported for hybrid thin-film solar cells.
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