dc.contributor.author | Lee, G. H. | |
dc.contributor.author | Bulliard, X. | |
dc.contributor.author | Yun, S. | |
dc.contributor.author | Leem, D. S. | |
dc.contributor.author | Park, K. B. | |
dc.contributor.author | Lee, K. H. | |
dc.contributor.author | et al. | |
dc.date.accessioned | 2021-12-09T14:04:26Z | |
dc.date.available | 2021-12-09T14:04:26Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Optics Express, vol. 27 (18), pp. 25410-25419, Sep 2019. | |
dc.identifier.uri | https://yoda.csem.ch/handle/20.500.12839/371 | |
dc.description.abstract | In this work, organic photodiodes (OPDs) based on two newly synthesized p-type dipolar small molecules are reported for application to green-light-selective OPDs. In order to reduce the blue-color absorption induced by the use of C60 as the n-type material in a bulk heterojunction (BHJ), the electron donor:electron acceptor composition ratio is tuned in the BHJ. With this light manipulation approach, the blue-wavelength external quantum efficiency (EQE) is minimized to 18% after reducing the C60 concentration in the center part of the BHJ. The two p-type molecules get a cyanine-like character with intense and sharp absorption in the green color by adjusting the strength of their donating and accepting parts and by choosing a selenophene unit as a pi-linker. When combined to C60, the green-wavelength EQE reaches 70% in a complete device composed of two transparent electrodes. Finally, the optical simulation shows the good color-balance performance of hybrid full-color image sensor without an additional filter by using the developed green OPD as the top-layer in stacked device architecture. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement | |
dc.subject | photodetectors, Optics | |
dc.title | Green-light-selective organic photodiodes for full-color imaging | |
dc.type | Journal Article | |
dc.type.csemdivisions | Div-V | |
dc.type.csemresearchareas | Photonics | |
dc.identifier.doi | https://doi.org/10.1364/oe.27.025410 | |