Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Soo-Kwan | ko |
dc.contributor.author | Park, Sungmin | ko |
dc.contributor.author | Son, Hae Jung | ko |
dc.contributor.author | Chung, Dae Sung | ko |
dc.date.accessioned | 2018-11-20T02:13:06Z | - |
dc.date.available | 2018-11-20T02:13:06Z | - |
dc.date.created | 2018-11-02 | - |
dc.date.issued | 2018-10 | - |
dc.identifier.citation | Macromolecules, v.51, no.20, pp.8241 - 8247 | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9424 | - |
dc.description.abstract | We suggest a synthetic strategy to accelerate charge collection narrowing (CCN) of a polymer photodiode so that a well-defined color selectivity can be realized even with a thin film thickness, which is the most important requirement for commercial application of polymer photodiodes. A new polymer semiconductor POFPhDT2FBT is synthesized by copolymerizing a difluorobenzothiadiazole acceptor with a difluorinated donor moiety. A polymer photodiode with a structure of indium tin oxide/ZnO/POFPhDT2FBT:PC70BM bulk-heterojunction (BHJ) (550 nm)/MoO3/Ag exhibits a high peak detectivity of ∼6 × 1012 jones at 650 nm with a narrow full width at half-maximum <80 nm as well as a low noise equivalent power (4.83 × 10-14 W Hz-0.5), implying that CCN is achieved. This result is valuable as usually a BHJ film with a thickness of 550 nm exhibits a detectivity spectrum similar in shape to the absorption spectrum. We attribute the origin of the thin-film CCN in the POFPhDT2FBT:PC70BM BHJ to a weakened intramolecular charge transfer between the donor and acceptor of POFPhDT2FBT, leading to near-isotropic molecular orientations with a short-range π-π ordering, as confirmed by grazing-incidence X-ray diffraction. In other words, in the case of POFPhDT2FBT, a substantial number of photogenerated charges can remain as space charge carriers, thus enabling the CCN without using a thickness larger than 1 μm. This study shows the possibility of efficient realization of color selectivity of a polymer photodiode even at a film thickness of 550 nm of the active layer, which can contribute to the improvement of the integration of organic image sensors in the near future. Copyright © 2018 American Chemical Society. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.subject | Absorption spectroscopy | - |
dc.subject | Charge carriers | - |
dc.subject | Charge transfer | - |
dc.subject | Film thickness | - |
dc.subject | Heterojunctions | - |
dc.subject | Image enhancement | - |
dc.subject | Photodiodes | - |
dc.subject | Polymers | - |
dc.subject | Tin oxides | - |
dc.subject | Bulk heterojunction (BHJ) | - |
dc.subject | Commercial applications | - |
dc.subject | Donor-acceptor polymers | - |
dc.subject | Grazing incidence X-ray diffraction | - |
dc.subject | Intra-molecular charge transfer | - |
dc.subject | Photogenerated charge | - |
dc.subject | Polymer semiconductors | - |
dc.subject | Synthetic strategies | - |
dc.subject | Thin films | - |
dc.title | Synthetic Approach to Achieve a Thin-Film Red-Selective Polymer Photodiode: Difluorobenzothiadiazole-Based Donor-Acceptor Polymer with Enhanced Space Charge Carriers | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acs.macromol.8b01751 | - |
dc.identifier.wosid | 000448753000033 | - |
dc.identifier.scopusid | 2-s2.0-85055054103 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.contributor.nonIdAuthor | Park, Sungmin | - |
dc.contributor.nonIdAuthor | Son, Hae Jung | - |
dc.identifier.citationVolume | 51 | - |
dc.identifier.citationNumber | 20 | - |
dc.identifier.citationStartPage | 8241 | - |
dc.identifier.citationEndPage | 8247 | - |
dc.identifier.citationTitle | Macromolecules | - |
dc.type.journalArticle | Article | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Chung, Dae Sung | - |
There are no files associated with this item.