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Organic-inorganic hybrid inverted photodiode with planar heterojunction for achieving low dark current and high detectivity

Title
Organic-inorganic hybrid inverted photodiode with planar heterojunction for achieving low dark current and high detectivity
Authors
Ha, JU[Ha, JaeUn]Yoon, SW[Yoon, Seongwon]Lee, JS[Lee, Jong-Soo]Chung, DS[Chung, Dae Sung]
DGIST Authors
Lee, JS[Lee, Jong-Soo]
Issue Date
2016-03-04
Citation
Nanotechnology, 27(9)
Type
Article
Article Type
Article
Keywords
Continuous LightDark CurrentsField Effect TransistorsHeterojunctionsHybrid PhotodiodeHybrid PhotodiodesInorganic NanocrystalsInverted StructureNanocrystalNanocrystalsOrganic-Inorganic HybridPhotodiodesPlanar HeterojunctionPolymeric SemiconductorsSolution-ProcessedVisible-Wavelength Range
ISSN
0957-4484
Abstract
In this study, the strategy of using an organic-inorganic hybrid planar heterojunction consisting of polymeric semiconductors and inorganic nanocrystals is introduced to realize a high-performance hybrid photodiode (HPD) with low dark current and high detectivity. To prevent undesired charge injection under the reverse bias condition, which is the major dark current source of the photodiode, a well-defined planar heterojunction is strategically constructed via smart solution process techniques. The optimized HPD renders a low dark current of ∼10-5 mA cm-2 at -5 V and ∼10-6 mA cm-2 at -1 V, as well as a high detectivity ∼1012 Jones across the entire visible wavelength range. Furthermore, excellent photocurrent stability is demonstrated under continuous light exposure. We believe that the solution-processed planar heterojunction with inverted structure can be an attractive alternative diode structure for fabricating high-performance HPDs, which usually suffer from high dark current issues. © 2016 IOP Publishing Ltd.
URI
http://hdl.handle.net/20.500.11750/2713
DOI
10.1088/0957-4484/27/9/095203
Publisher
Institute of Physics Publishing
Related Researcher
  • Author Lee, Jong Soo Multifuntional Nanomaterials & Energy Devices Lab(MNEDL)
  • Research Interests
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringMNEDL(Multifunctional Nanomaterials & Energy Devices Lab)1. Journal Articles


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