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Efficient perovskite solar cells employing a solution-processable copper phthalocyanine as a hole-transporting material
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2017 (English)In: Science China Chemistry, ISSN 1674-7291, Vol. 60, no 3, 423-430 p.Article in journal (Refereed) Published
Abstract [en]

The development of alternative low-cost and high-performing hole-transporting materials (HTMs) is of great significance for the potential large-scale application of perovskite solar cells (PSCs) in the future. Here, a facilely synthesized solution-processable copper tetra-(2,4-dimethyl-3-pentoxy) phthalocyanine (CuPc-DMP) via only two simple steps, has been incorporated as a hole-transporting material (HTM) in mesoscopic perovskite solar cells (PSCs). The optimized devices based on such a HTM afford a very competitive power conversion efficiency (PCE) of up to 17.1% measured at 100 mW cm(-2) AM 1.5G irradiation, which is on par with that of the well-known 2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD) (16.7%) under equivalent conditions. This is, to the best of our knowledge, the highest value reported so far for metal organic complex-based HTMs in PSCs. The advantages of this HTM observed, such as facile synthetic procedure, superior hole transport characteristic, high photovoltaic performance together with the feasibility of tailoring the molecular structure would make solution-processable copper phthalocyanines as a class of promising HTM that can be further explored in PSCs. The present finding highlights the potential application of solution processed metal organic complexes as HTMs for cost-effective and high-performing PSCs.

Place, publisher, year, edition, pages
Science in China Press , 2017. Vol. 60, no 3, 423-430 p.
Keyword [en]
solution-processable copper phthalocyanine, metal organic complex, low-cost, hole-transporting material, perovskite solar cells
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-205050DOI: 10.1007/s11426-016-0393-5ISI: 000395621300015Scopus ID: 2-s2.0-85013101801OAI: oai:DiVA.org:kth-205050DiVA: diva2:1104726
Note

QC 20170601

Available from: 2017-06-01 Created: 2017-06-01 Last updated: 2017-11-10Bibliographically approved

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Sun, Licheng

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