Tunable light emission by exciplex state formation between hybrid halide perovskite and core/shell quantum dots: Implications in advanced LEDs and photovoltaics
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Other documents of the author: S. Sánchez, Rafael; Solís de la Fuente, Mauricio; Suárez, Isaac; Muñoz Matutano, G.; Martínez-Pastor, Juan P.; Mora-Sero, Ivan
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comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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Title
Tunable light emission by exciplex state formation between hybrid halide perovskite and core/shell quantum dots: Implications in advanced LEDs and photovoltaicsAuthor (s)
Date
2016Publisher
American Association for the Advancement of ScienceISSN
2375-2548Bibliographic citation
SANCHEZ, Rafael S., et al. Tunable light emission by exciplex state formation between hybrid halide perovskite and core/shell quantum dots: Implications in advanced LEDs and photovoltaics. Science advances, 2016, vol. 2, no 1Type
info:eu-repo/semantics/articlePublisher version
http://advances.sciencemag.org/content/2/1/e1501104.abstractVersion
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Abstract
We report the first observation of exciplex state electroluminescence due to carrier injection between the hybrid lead halide perovskite (MAPbI3–xClx) and quantum dots (core/shell PbS/CdS). Single layers of perovskite ... [+]
We report the first observation of exciplex state electroluminescence due to carrier injection between the hybrid lead halide perovskite (MAPbI3–xClx) and quantum dots (core/shell PbS/CdS). Single layers of perovskite (PS) and quantum dots (QDs) have been produced by solution processing methods, and their photoluminescent properties are compared to those of bilayer samples in both PS/QD and QD/PS configurations. Exciplex emission at lower energies than the band gap of both PS and QD has been detected. The exciplex emission wavelength of this mixed system can be simply tuned by controlling the QD size. Light-emitting diodes (LEDs) have been fabricated using those configurations, which provide light emission with considerably low turn-on potential. The “color” of the LED can also be tuned by controlling the applied bias. The presence of the exciplex state PS and QDs opens up a broad range of possibilities with important implications not only in tunable LEDs but also in the preparation of intermediate band gap photovoltaic devices with the potentiality of surpassing the Shockley-Queisser limit. [-]
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Science advances, 2016, vol. 2, núm. 1Rights
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