Layout flexibility for sheet-to-sheet produced flexible ITO-free organic solar modules with organic functional layers slot die coated under ambient atmospheric conditions
Four different module layouts for indium tin oxide (ITO)-free flexible organic solar modules with device performance varying from 1.8% to 2.7% are reported in this work. Module 1, with a device efficiency of 2.5% on an active area of 88cm2, demonstrates the up scaling of small area cells to larger a...
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Published in | Solar energy materials and solar cells Vol. 136; pp. 200 - 205 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.05.2015
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Subjects | |
Online Access | Get full text |
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Summary: | Four different module layouts for indium tin oxide (ITO)-free flexible organic solar modules with device performance varying from 1.8% to 2.7% are reported in this work. Module 1, with a device efficiency of 2.5% on an active area of 88cm2, demonstrates the up scaling of small area cells to larger area modules. Module 2, with a device efficiency of 1.8% and 106.4V on an active area of 32.6cm2, demonstrates high voltage on a small area. Module 3, with a device efficiency of 2% on an active area of 60.8cm2 with a hexagonal layout, demonstrates the flexibility in module layout. Module 4 built as a reference module device on small active area of 6.1cm2 had a device efficiency of 2.7%. PEDOT:PSS together with a metal grid is the transparent hole contact replacing ITO. The reference modules were also built without the metal grid (only PEDOT:PSS has a hole contact) and measured under 2000 and 500lx resulting in the modules without grid outperforming the ones with grid. Therefore for indoor applications modules can be processed even without the top metal grid for current collection which not only reduces the material cost and the number of processing step but also eliminates the major concern of depositing metal electrodes on top of organic layers.
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•Design flexibility for ITO-free organic solar modules.•Slot die coating with non-halogenated solvent under atmospheric conditions.•PCE of 1.8%–2.7% with different module design.•OSCs without grid outperforms the ones with grid under low light/indoor conditions. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0927-0248 1879-3398 |
DOI: | 10.1016/j.solmat.2014.11.043 |