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Extending the Continuous Operating Lifetime of Perovskite Solar Cells with a Molybdenum Disulfide Hole Extraction Interlayer
Author(s) -
Kakavelakis George,
Paradisanos Ioannis,
Paci Barbara,
Generosi Amanda,
Papachatzakis Michael,
Maksudov Temur,
Najafi Leyla,
Del Rio Castillo Antonio Esaú,
Kioseoglou George,
Stratakis Emmanuel,
Bonaccorso Francesco,
Kymakis Emmanuel
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201702287
Subject(s) - materials science , perovskite (structure) , photovoltaic system , halide , molybdenum disulfide , energy conversion efficiency , optoelectronics , inert , nanotechnology , chemical engineering , composite material , inorganic chemistry , electrical engineering , chemistry , physics , quantum mechanics , engineering
Solution‐processed organic–inorganic lead halide perovskite solar cells (PSCs) are considered as one of the most promising photovoltaic technologies thanks to both high performance and low manufacturing cost. However, a key challenge of this technology is the lack of ambient stability over prolonged solar irradiation under continuous operating conditions. In fact, only a few studies (carried out in inert atmosphere) already approach the industrial standards. Here, it is shown how the introduction of MoS 2 flakes as a hole transport interlayer in inverted planar PSCs results in a power conversion efficiency (PCE) of ≈17%, overcoming the one of the standard reference devices. Furthermore, this approach allows the realization of ultrastable PSCs, stressed in ambient conditions and working at continuous maximum power point. In particular, the photovoltaic performances of the proposed PSCs represent the current state‐of‐the‐art in terms of lifetime, retaining 80% of their initial performance after 568 h of continuous stress test, thus approaching the industrial stability standards. Moreover, it is further demonstrated the feasibility of this approach by fabricating large‐area PSCs (0.5 cm 2 active area) with MoS 2 as the interlayer. These large‐area PSCs show improved performance (i.e., PCE = 13.17%) when compared with the standard devices (PCE = 10.64%).