Back to Search
Start Over
Iodine-mediated non-destructive multilayer stacking of polymer semiconductors for near-infrared-selective photodiode.
- Source :
-
Organic Electronics . May2019, Vol. 68, p63-69. 7p. - Publication Year :
- 2019
-
Abstract
- Abstract A facile stacking technology must be developed for various types of polymer semiconductors through a continuous solution process for successful commercial applications of organic electronics. In this study, we report a strategic method of stacking different polymer semiconductors from the same processing solvent in a non-destructive manner using vapor-phase iodine. We utilize the concept of reversible doping mechanism of iodine; interstitial iodine ions in the polymer backbone significantly reduce the solubility of entire films and such an immobilized phase can be quickly recovered to the initial phase via a simple vacuum treatment. Thus, a polymer–polymer p-n planar heterojunction (PHJ) can be realized using the same solvent without compromising the inherent electrical/optical characteristics of the polymer semiconductor. Detailed photophysical and morphological analyses on the doping and dedoping of polymeric semiconductors with iodine are discussed. As a target application of such iodine-mediated non-destructive stacking technology, a thin-film near-infrared(NIR)-selective polymeric photodiode, which can fully reflect the genuine advantages of a well-defined PHJ, is demonstrated. We successfully demonstrate a visible-blind and narrow-band NIR-selective photodiode with a high peak detectivity of 1.50 × 1011 Jones. Graphical abstract Image 1 Highlights • We suggest a facile and non-destructive multilayer stacking strategy of polymer semiconductors based on iodine doping/dedoping methods. • As using iodine-mediated multilayer stacking method, we demonstrate a thin-film, visible-blind and NIR-selective polymeric photodiode. • Our visible-blind and NIR-selective photodiode show a high peak detectivity of 1.50 × 1011 Jones. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HETEROJUNCTIONS
*POLYMERS
*SEMICONDUCTORS
Subjects
Details
- Language :
- English
- ISSN :
- 15661199
- Volume :
- 68
- Database :
- Academic Search Index
- Journal :
- Organic Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 135257181
- Full Text :
- https://doi.org/10.1016/j.orgel.2019.02.002