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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Khan, M. Alam Farva, Umme |
| Copyright Year | 2017 |
| Abstract | Vapour deposited metallophthalocyanines (VoPC, NiPC, SnPC, TiPC, FePC, InPC) were inserted as thin p-type buffer layers into organic solar cells consisting of regio-regular poly(3-hexylthiophene) and [6,6]-phenyl C61-butyric acid methyl ester in order to modify the band alignment for enhanced photovoltaic responses. It is observed that the VoPC, NiPC and SnPC show higher efficiencies in both ∼5 nm and ∼10 nm thicknesses of film when coated on a PEDOT:PSS layer. The observations were an enhanced efficiency with a maximum JSC value of 14.80 mA cm−2, VOC of 0.60, and FF of 51% with a conversion efficiency of 3.61% in the case of ∼5 nm thick VoPC, while the ∼5 nm thick NiPC shows a JSC value of 11.15 mA cm−2 with 3.13% efficiency, and similarly the ∼10 nm thick NiPC has a JSC value of 8.98 mA cm−2 with overall efficiency of 2.52%. However, the TiPC, FePC and InPC show poor efficiencies even lower than those of the usual bulk-heterojunction solar cells with deposition of either a ∼5 nm or a 10 nm buffer layer. The enhanced efficiency in VoPC, NiPC and SnPC may be the result of extended absorption, high transparency, planar porphyrin complex orientation and holding p-type properties to transfer the hole efficiently towards the anodes, with additionally a better bicontinuous interpenetrating network with vapour deposited layers, which greatly reduces the exciton loss and improves the charge transport capability. |
| Starting Page | 11304 |
| Ending Page | 11311 |
| Page Count | 8 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 7 |
| Issue Number | 19 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra26919b |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Extrinsic semiconductor Exciton Open-circuit voltage VoPC Polythiophene Poly(3,4-ethylenedioxythiophene) The Observations NiPC Vapour Phenyl group Solar cell PSS Ester PEDOT Porphyrin JSC |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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