Sub-Band Gap Turn-On Near-Infrared-to-Visible Up-Conversion Device Enabled by an Organic-Inorganic Hybrid Perovskite Photovoltaic Absorber

By Hyeonggeun Yu; Yuanhang Cheng; Menglin Li; Sai-Wing Tsang; Franky So

doi:10.1021/acsami.8b00592

Author(s)

By Hyeonggeun Yu
Yuanhang Cheng
Menglin Li
Sai-Wing Tsang
Franky So

Detail(s)

Original language	English
Pages (from-to)	15920-15925
Journal / Publication	ACS Applied Materials and Interfaces
Volume	10
Issue number	18
Online published	17 Apr 2018
Publication status	Published - 9 May 2018

Link(s)

DOI	DOI https://doi.org/10.1021/acsami.8b00592 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85046408801&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(b41b6e8c-3fd2-427f-93b7-7062b3a5ba7e).html

Abstract

Direct integration of an infrared (IR) photodetector with an organic light-emitting diode (OLED) enables low-cost, pixel-free IR imaging. However, the operation voltage of the resulting IR-to-visible up-conversion is large because of the series device architecture. Here, we report a low-voltage near-IR (NIR)-to-visible up-conversion device using formamidinium lead iodide as a NIR absorber integrated with a phosphorescent OLED. Because of the efficient photocarrier injection from the hybrid perovskite layer to the OLED, we observed a sub-band gap turn-on of the OLED under NIR illumination. The device showed a NIR-to-visible up-conversion efficiency of 3% and a luminance on/off ratio of 10³ at only 5 V. Finally, we demonstrate pixel-free NIR imaging using the up-conversion device.

Research Area(s)

infrared imaging, organic light-emitting diode, organo-halide perovskite, photovoltaic, up-conversion

Citation Format(s)

[ RIS ] [ BibTeX ]

Sub-Band Gap Turn-On Near-Infrared-to-Visible Up-Conversion Device Enabled by an Organic-Inorganic Hybrid Perovskite Photovoltaic Absorber. / Yu, By Hyeonggeun; Cheng, Yuanhang ; Li, Menglin et al.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 18, 09.05.2018, p. 15920-15925.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Yu, BH, Cheng, Y , Li, M , Tsang, S-W & So, F 2018, 'Sub-Band Gap Turn-On Near-Infrared-to-Visible Up-Conversion Device Enabled by an Organic-Inorganic Hybrid Perovskite Photovoltaic Absorber', ACS Applied Materials and Interfaces, vol. 10, no. 18, pp. 15920-15925. https://doi.org/10.1021/acsami.8b00592

Yu, B. H., Cheng, Y., Li, M., Tsang, S-W., & So, F. (2018). Sub-Band Gap Turn-On Near-Infrared-to-Visible Up-Conversion Device Enabled by an Organic-Inorganic Hybrid Perovskite Photovoltaic Absorber. ACS Applied Materials and Interfaces, 10(18), 15920-15925. https://doi.org/10.1021/acsami.8b00592

Yu BH, Cheng Y , Li M , Tsang S-W, So F. Sub-Band Gap Turn-On Near-Infrared-to-Visible Up-Conversion Device Enabled by an Organic-Inorganic Hybrid Perovskite Photovoltaic Absorber. ACS Applied Materials and Interfaces. 2018 May 9;10(18):15920-15925. Epub 2018 Apr 17. doi: 10.1021/acsami.8b00592

Yu, By Hyeonggeun ; Cheng, Yuanhang ; Li, Menglin et al. / Sub-Band Gap Turn-On Near-Infrared-to-Visible Up-Conversion Device Enabled by an Organic-Inorganic Hybrid Perovskite Photovoltaic Absorber. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 18. pp. 15920-15925.