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Kwon, Tae-Hyuk
Energy Recognition
Research Interests
  • Energy transfer, organic solar cells, supercapacitor, ultrasonic spray chemistry, dithienothiophene, iridium complexes, phosphorescent bioapplications

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Inverted semi-transparent organic solar cells with spray coated, surfactant free polymer top-electrodes

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Title
Inverted semi-transparent organic solar cells with spray coated, surfactant free polymer top-electrodes
Author
Colsmann, AlexanderReinhard, ManuelKwon, Tae-HyukKayser, ChristianNickel, FelixCzolk, JensLemmer, UliClark, NoelJasieniak, JacekHolmes, Andrew B.Jones, David
Issue Date
2012-03
Publisher
ELSEVIER SCIENCE BV
Citation
SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.98, pp.118 - 123
Abstract
Depositing a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) buffer layer or top-electrode from aqueous solution on a non-polar active layer in inverted organic solar cells is commonly considered a very challenging task. In this work we utilize spray deposited PEDOT:PSS seeds to effectively reduce the surface free energy atop the active layer in poly-hexylthiophene polymer solar cells before applying a PEDOT:PSS top-electrode. Though aqueous PEDOT:PSS is repelled from non-polar surfaces, very small droplets can adhere to the surface. The distribution of the sprayed PEDOT:PSS droplets can be controlled via the substrate temperature and the material flow rate. The less time the droplets have to contract along the surface before drying, the better is the surface seed coverage and the more homogenous is the formation of a subsequently deposited PEDOT:PSS electrode. The respective solar cells are semi-transparent and exhibit an overall power conversion efficiency eta approximate to 2%.
URI
https://scholarworks.unist.ac.kr/handle/201301/8685
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84855300291
DOI
10.1016/j.solmat.2011.10.016
ISSN
0927-0248
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CHM_Journal Papers
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