| 초록 |
We demonstrate a method of tuning the high-detectivity spectra of the organic photodiode (OPD) in thin-film filter-less full-color image sensor. The strategically demonstrated PIN junction enables a selective activation of excitons generated from the photons with low extinction coefficient, while the excitons from photons with high extinction coefficient are immediately recombined. Also, we introduced that a well-defined PIN junction blocks the injection of unwanted charge carriers with an effective Schottky barrier height higher than 0.69 eV under the reverse bias, leading to very low dark current and near-ideal diode characteristics. Consequently, the high specific detectivity over 1.0 × 1012 Jones are observed for R/G/B full color detection with thin-film OPDs. |
