Germanium-OLED short-wave infrared-to-visible upconverters - Details

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Infrared-to-visible　upconverters　consisting　of　infrared　photodetectors　(PDs)　with　visible　light-emitting　diodes　(LEDs)　to　directly　visualize　infrared　images　without　intermediate　electronics　have　stimulated　research　interest.　However,　existing　upconverters　mostly　detect　infrared　only　in　the　near-infrared　region,　preventing　the　extensive　short-wave　infrared　(SWIR)　application.　Here,　we　innovatively　integrate　strong-SWIR-response　n-type　germanium　(Ge)/indium　tin　oxide　(ITO)　PDs　with　phosphorescence　organic　LEDs　(OLEDs)　to　realize　the　efficient　upconversion　of　SWIR　to　green　light　through　a　simple　fabrication　process.　The　ITO　layers　not　only　construct　Schottky　heterojunction　with　the　Ge　to　improve　SWIR　detection　ability　but　also　provide　the　photogenerated　carriers　transport　channel　from　PDs　to　OLEDs.　As　a　result,　the　Ge-OLED　upconverters　exhibit　the　efficient　upconversion　of　SWIR　and　high　p-p　efficiency　of　7%.　©　2023　Author(s).

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[ 1 ] [Rao T.]School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
[ 2 ] [Qi Y.]School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
[ 3 ] [Hao Q.]School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
[ 4 ] [Hao Q.]Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing, 100081, China
[ 5 ] [Hao Q.]Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing, 314019, China
[ 6 ] [Chen M.]School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
[ 7 ] [Chen M.]Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing, 100081, China
[ 8 ] [Chen M.]Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing, 314019, China
[ 9 ] [Tang X.]School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
[ 10 ] [Tang X.]Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing, 100081, China
[ 11 ] [Tang X.]Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing, 314019, China
[ 12 ] [Mu G.]School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
[ 13 ] [Mu G.]Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China

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Applied Physics Letters

ISSN： 0003-6951

Year： 2023

Issue： 24

Volume： 123

4 . 0 0 0

JCR@2022

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WoS CC Cited Count： 0

SCOPUS Cited Count： 2

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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