This title appears in the Scientific Report :
2017
Please use the identifier:
http://hdl.handle.net/2128/11658 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.ultsonch.2016.05.039 in citations.
Liquid hydridosilane precursor prepared from cyclopentasilane via sonication at low temperatures without the action of light
Liquid hydridosilane precursor prepared from cyclopentasilane via sonication at low temperatures without the action of light
We report on a liquid hydridosilane precursor ink prepared via the ultrasonically induced ring-opening polymerisation of cyclopentasilane (Si5H10) without irradiation by ultraviolet light. The sonication is carried out in N2 atmosphere at temperatures between 20 and 75 °C. We use size exclusion chro...
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Personal Name(s): | Cádiz Bedini, A. P. (Corresponding author) |
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Muthmann, S. / Allgaier, J. / Bittkau, Karsten / Finger, Friedhelm / Carius, Reinhard | |
Contributing Institute: |
Neutronenstreuung; ICS-1 Photovoltaik; IEK-5 Neutronenstreuung; JCNS-1 |
Published in: | Ultrasonics sonochemistry, 34 (2017) S. 289 - 293 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2017
|
PubMed ID: |
27773248 |
DOI: |
10.1016/j.ultsonch.2016.05.039 |
Document Type: |
Journal Article |
Research Program: |
Solar cells of the next generation Soft Matter, Health and Life Sciences Jülich Centre for Neutron Research (JCNS) Functional Macromolecules and Complexes |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.ultsonch.2016.05.039 in citations.
We report on a liquid hydridosilane precursor ink prepared via the ultrasonically induced ring-opening polymerisation of cyclopentasilane (Si5H10) without irradiation by ultraviolet light. The sonication is carried out in N2 atmosphere at temperatures between 20 and 75 °C. We use size exclusion chromatography (SEC) to show polymer growth and estimate molecular mass with increasing sonication time. In combination with UV–vis transmission measurements, further SEC analysis is used to compare solutions subjected to either purely thermal or ultrasonic treatment at the same process temperature and for the same duration. Our findings provide strong evidence showing that the initiation of the polymerisation is sonocatalytic in nature and not thermic due to the macroscopic temperature of the solution. The liquid precursor is used to produce homogeneous hydrogenated amorphous silicon (a-Si:H) thin films via spin coating and pyrolytic conversion. The optoelectronic properties of the films are subsequently improved by hydrogen radical treatment. Fourier transform infrared spectroscopy (FTIR) is used to determine a compact film morphology and electrical conductivity measurements show that the layers attain a light-to-dark photosensitivity ratio of 2 × 103 making them suitable for application in optoelectronic devices. |