Samenvatting
Organic photodetectors (OPDs) have attracted much attention in recent years, due to their promise in large-area light sensing applications. Here, high-resolution slot-die-coated large-area bulk heterojunction organic photodiode (OPD) arrays are reported. The OPD uses a novel electron transport layer, indium gallium zinc oxide in combination with a molybdenum oxide top-electrode. Together, these effectively reduce dark current densities to very low levels of ≈10−7 mA cm−2 at −2 V. The OPDs show linear behavior in a wide range of light intensities and high detectivity values under reverse bias conditions. When coated on a 508 ppi TFT backplane, a high-quality optical fingerprint scanner capable of imaging in reflection is realized. The optical and electrical properties of the fingerprint sensor are characterized and high-resolution fingerprint images are obtained.
Originele taal-2 | Engels |
---|---|
Artikelnummer | 1900651 |
Aantal pagina's | 6 |
Tijdschrift | Advanced Materials Technologies |
Volume | 4 |
Nummer van het tijdschrift | 11 |
Vroegere onlinedatum | 23 sep 2019 |
DOI's | |
Status | Gepubliceerd - 1 nov 2019 |