Core–shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes

Marinos Tountas; Anastasia Soultati; Konstantina-Kalliopi Armadorou; Kalliopi Ladomenou; Georgios Landrou; Apostolis Verykios; Maria-Christina Skoulikidou; Stylianos Panagiotakis; Petros-Panagis Fillipatos; Konstantina Yannakopoulou; Alexander Chroneos; Leonidas C Palilis; Abd Rashid Bin Mohd Yusoff; Athanassios G Coutsolelos; Panagiotis Argitis; Maria Vasilopoulou

doi:10.1088/2515-7647/ac79e9

Core–shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes

Marinos Tountas, Anastasia Soultati, Konstantina-Kalliopi Armadorou, Kalliopi Ladomenou, Georgios Landrou, Apostolis Verykios, Maria-Christina Skoulikidou, Stylianos Panagiotakis, Petros-Panagis Fillipatos, Konstantina Yannakopoulou, Alexander Chroneos, Leonidas C Palilis, Abd Rashid Bin Mohd Yusoff, Athanassios G Coutsolelos, Panagiotis Argitis, Maria Vasilopoulou

Centre for Manufacturing and Materials

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Abstract

Abstract: High-performance perovskite light-emitting diodes (PeLEDs) require a high quality perovskite emitter and appropriate charge transport layers to facilitate charge injection and transport within the device. Solution-processed n-type metal oxides represent a judicious choice for the electron transport layer (ETL); however, they do not always present surface properties and energetics compatible with the perovskite emitter. Moreover, the emitter itself exhibits poor nanomorphology and defect traps that compromise the device performance. Here, we modulate the surface properties and interface energetics between the tin oxide (SnO2) ETL with the perovskite emitter by using an amino functionalized difluoro{2-[1-(3,5-dimethyl-2H-pyrrol-2-ylidene-N)ethyl]-3,5-dimethyl-1H-pyrrolato-N}boron compound and passivate the defects present in the perovskite matrix with carbon-polymer core–shell quantum dots inserted into the perovskite precursor. Both these approaches synergistically improve the perovskite layer nanomorphology and enhance the radiative recombination. These properties resulted in the fabrication of near-infrared PeLEDs based on formamidinium lead iodide (FAPbI3) with a high radiance of 92 W sr−1 m−2, an external quantum efficiency (EQE) of 14%, reduced efficiency roll-off and prolonged lifetime. In particular, the modified device retained 80% of the initial EQE (T80) for 33 h compared to 6 h of the reference cell.

Original language	English
Article number	034007
Number of pages	13
Journal	Journal of Physics: Photonics
Volume	4
Issue number	3
DOIs	https://doi.org/10.1088/2515-7647/ac79e9
Publication status	Published - 1 Jul 2022

Bibliographical note

Original content from this work may be used under the terms of the
Creative Commons Attribution 4.0 licence. Any further distribution
of this work must maintain attribution to the author(s) and the title
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Funder

Funding Information: This research is co-financed by Greece and the European Union (European Social Fund-ESF) through the Operational Programmed «Human Resources Development, Education and Lifelong Learning» in the context of the project ‘Reinforcement of Postdoctoral Researchers—2nd Cycle’ (MIS-5033021), implemented by the State Scholarships Foundation (IKΥ).

Keywords

Paper
Focus on Grand Challenges in Halide Perovskites: Light-Emitting Perovskites - Materials, Devices and Emerging Phenomena
core–shell
carbon
polymer
quantum
dot
perovskite
light emitting diodes

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Tountas, M., Soultati, A., Armadorou, K.-K., Ladomenou, K., Landrou, G., Verykios, A., Skoulikidou, M.-C., Panagiotakis, S., Fillipatos, P.-P., Yannakopoulou, K., Chroneos, A., Palilis, L. C., Yusoff, A. R. B. M., Coutsolelos, A. G., Argitis, P., & Vasilopoulou, M. (2022). Core–shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes. Journal of Physics: Photonics, 4(3), Article 034007. https://doi.org/10.1088/2515-7647/ac79e9

Tountas, M, Soultati, A, Armadorou, K-K, Ladomenou, K, Landrou, G, Verykios, A, Skoulikidou, M-C, Panagiotakis, S, Fillipatos, P-P, Yannakopoulou, K, Chroneos, A, Palilis, LC, Yusoff, ARBM, Coutsolelos, AG, Argitis, P & Vasilopoulou, M 2022, 'Core–shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes', Journal of Physics: Photonics, vol. 4, no. 3, 034007. https://doi.org/10.1088/2515-7647/ac79e9

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abstract = "Abstract: High-performance perovskite light-emitting diodes (PeLEDs) require a high quality perovskite emitter and appropriate charge transport layers to facilitate charge injection and transport within the device. Solution-processed n-type metal oxides represent a judicious choice for the electron transport layer (ETL); however, they do not always present surface properties and energetics compatible with the perovskite emitter. Moreover, the emitter itself exhibits poor nanomorphology and defect traps that compromise the device performance. Here, we modulate the surface properties and interface energetics between the tin oxide (SnO2) ETL with the perovskite emitter by using an amino functionalized difluoro{2-[1-(3,5-dimethyl-2H-pyrrol-2-ylidene-N)ethyl]-3,5-dimethyl-1H-pyrrolato-N}boron compound and passivate the defects present in the perovskite matrix with carbon-polymer core–shell quantum dots inserted into the perovskite precursor. Both these approaches synergistically improve the perovskite layer nanomorphology and enhance the radiative recombination. These properties resulted in the fabrication of near-infrared PeLEDs based on formamidinium lead iodide (FAPbI3) with a high radiance of 92 W sr−1 m−2, an external quantum efficiency (EQE) of 14%, reduced efficiency roll-off and prolonged lifetime. In particular, the modified device retained 80% of the initial EQE (T80) for 33 h compared to 6 h of the reference cell.",

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AU - Tountas, Marinos

AU - Soultati, Anastasia

AU - Armadorou, Konstantina-Kalliopi

AU - Ladomenou, Kalliopi

AU - Landrou, Georgios

AU - Verykios, Apostolis

AU - Skoulikidou, Maria-Christina

AU - Panagiotakis, Stylianos

AU - Fillipatos, Petros-Panagis

AU - Yannakopoulou, Konstantina

AU - Chroneos, Alexander

AU - Palilis, Leonidas C

AU - Yusoff, Abd Rashid Bin Mohd

AU - Coutsolelos, Athanassios G

AU - Argitis, Panagiotis

AU - Vasilopoulou, Maria

N1 - Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

PY - 2022/7/1

Y1 - 2022/7/1

N2 - Abstract: High-performance perovskite light-emitting diodes (PeLEDs) require a high quality perovskite emitter and appropriate charge transport layers to facilitate charge injection and transport within the device. Solution-processed n-type metal oxides represent a judicious choice for the electron transport layer (ETL); however, they do not always present surface properties and energetics compatible with the perovskite emitter. Moreover, the emitter itself exhibits poor nanomorphology and defect traps that compromise the device performance. Here, we modulate the surface properties and interface energetics between the tin oxide (SnO2) ETL with the perovskite emitter by using an amino functionalized difluoro{2-[1-(3,5-dimethyl-2H-pyrrol-2-ylidene-N)ethyl]-3,5-dimethyl-1H-pyrrolato-N}boron compound and passivate the defects present in the perovskite matrix with carbon-polymer core–shell quantum dots inserted into the perovskite precursor. Both these approaches synergistically improve the perovskite layer nanomorphology and enhance the radiative recombination. These properties resulted in the fabrication of near-infrared PeLEDs based on formamidinium lead iodide (FAPbI3) with a high radiance of 92 W sr−1 m−2, an external quantum efficiency (EQE) of 14%, reduced efficiency roll-off and prolonged lifetime. In particular, the modified device retained 80% of the initial EQE (T80) for 33 h compared to 6 h of the reference cell.

AB - Abstract: High-performance perovskite light-emitting diodes (PeLEDs) require a high quality perovskite emitter and appropriate charge transport layers to facilitate charge injection and transport within the device. Solution-processed n-type metal oxides represent a judicious choice for the electron transport layer (ETL); however, they do not always present surface properties and energetics compatible with the perovskite emitter. Moreover, the emitter itself exhibits poor nanomorphology and defect traps that compromise the device performance. Here, we modulate the surface properties and interface energetics between the tin oxide (SnO2) ETL with the perovskite emitter by using an amino functionalized difluoro{2-[1-(3,5-dimethyl-2H-pyrrol-2-ylidene-N)ethyl]-3,5-dimethyl-1H-pyrrolato-N}boron compound and passivate the defects present in the perovskite matrix with carbon-polymer core–shell quantum dots inserted into the perovskite precursor. Both these approaches synergistically improve the perovskite layer nanomorphology and enhance the radiative recombination. These properties resulted in the fabrication of near-infrared PeLEDs based on formamidinium lead iodide (FAPbI3) with a high radiance of 92 W sr−1 m−2, an external quantum efficiency (EQE) of 14%, reduced efficiency roll-off and prolonged lifetime. In particular, the modified device retained 80% of the initial EQE (T80) for 33 h compared to 6 h of the reference cell.

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Core–shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes

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