We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Thick junction broadband organic photodiodes.
- Authors
Armin, Ardalan; Hambsch, Mike; Kim, Il Ku; Burn, Paul L; Meredith, Paul; Namdas, Ebinazar B
- Abstract
Inorganic semiconductor-based broadband photodetectors are ubiquitous in imaging technologies such as digital cameras and photometers. Herein a broadband organic photodiode (OPD) that has performance metrics comparable or superior to inorganic photodiodes over the same spectral range is reported. The photodiode with an active layer comprised of a poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2- thienyl-2',1',3'-benzothiadiazole)]:[6,6]-phenyl-C71-butyric acid methyl ester bulk heterojunction blend had a dark current < 1 nA/cm², specific detectivity of ~ 1013 Jones, reverse bias -3 dB frequency response of 100 kHz to 1 MHz, and state-of-the-art Linear Dynamic Range for organic photodiodes of nine orders of magnitude (180 dB). The key to these performance metrics was the use of a thick junction (700 nm), which flattened the spectral response, reduced the dark current and decreased performance variations. The strategy also provides a route to large area defect free "monolithic" structures for low noise integrated photo-sensing, position determination, or contact, non-focal imaging.
- Subjects
PHOTODIODES; SPECTRUM analysis; PHOTOELECTRIC devices; PHOTODETECTORS; PHOTOMETERS
- Publication
Laser & Photonics Reviews, 2014, Vol 8, Issue 6, p924
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.201400081