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Title: Perovskite templating via a bathophenanthroline additive for efficient light-emitting devices
Authors: Jamaludin, Nur Fadilah
Yantara, Natalia
Ng, Yan Fong
Bruno, Annalisa
Chandran, Bevita K.
Chin, Xin Yu
Thirumal, Krishnamoorthy
Mathews, Nripan
Soci, Cesare
Mhaisalkar, Subodh
Keywords: Science::Physics
Light Emission
Issue Date: 2018
Source: Jamaludin, N. F., Yantara, N., Ng, Y. F., Bruno, A., Chandran, B. K., Chin, X. Y., … Mhaisalkar, S. (2018). Perovskite templatingviaa bathophenanthroline additive for efficient light-emitting devices. Journal of Materials Chemistry C, 6(9), 2295-2302. doi:10.1039/C7TC05643E
Series/Report no.: Journal of Materials Chemistry C
Abstract: Identified as emerging light absorbers due to their plethora of unique optoelectronic properties, perovskites have also been touted as a promising candidate for light emission. However, despite the effortless transition of perovskites into the current organic light-emitting diodes (OLEDs), misalignment of energy levels at the hole transporting material (HTM) and perovskite interface limits the efficacy of interfacial charge transport. Herein, it is shown that by incorporating a small organic molecule, bathophenanthroline (BPhen), into the CH3NH3PbBr3 emitter via a solvent engineering technique, the energy band levels of the perovskite can be tailored and the energy mismatch at the HTM/perovskite interface can be ameliorated through the formation of a graded emitter layer and accompanying morphological improvements. With a BPhen concentration of 0.500 mg mL−1, more than ten-fold enhancement of device luminance and efficiency was achieved, thus demonstrating a facile and viable approach for fabricating high-performance perovskite light-emitting diodes (PeLEDs).
ISSN: 2050-7526
DOI: 10.1039/C7TC05643E
Rights: © 2018 The Author(s). All rights reserved. This paper was published by Royal Society of Chemistry in Journal of Materials Chemistry C and is made available with permission of The Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
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