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3 October 2022 Avalanche upconversion devices (Conference Presentation)
Noel C. Giebink
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Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC122080G (2022) https://doi.org/10.1117/12.2634024
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
Integrating an organic light-emitting diode (OLED) back-to-back with an organic photodiode (OPD) is a well-known path to upconvert near-infrared light for display purposes. This talk will explore a new, positive feedback regime that arises when the OLED is a tandem device with greater-than-unity quantum efficiency, enabling the OLED emission>>OPD absorption>>OLED emission loop gain to exceed one. The runaway increase in OLED light output that occurs in this situation enables low-level light detection with upconversion gain >10,000 and millisecond dynamic response.
Conference Presentation
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Noel C. Giebink "Avalanche upconversion devices (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122080G (3 October 2022); https://doi.org/10.1117/12.2634024
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KEYWORDS
Organic light emitting diodes
Upconversion
OLED lighting
Absorption
Photodiodes
Positive feedback
Quantum efficiency
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