Nanowire encapsulation with polymer for electrical isolation and enhanced optical properties View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2017-03-14

AUTHORS

Tuomas Haggren, Ali Shah, Anton Autere, Joona-Pekko Kakko, Veer Dhaka, Maria Kim, Teppo Huhtio, Zhipei Sun, Harri Lipsanen

ABSTRACT

Light management and electrical isolation are essential for the majority of optoelectronic nanowire (NW) devices. Here, we present a cost-effective technique, based on vapor-phase deposition of parylene-C and subsequent annealing, that provides conformal encapsulation, anti-reflective coating, improved optical properties, and electrical insulation for GaAs nanowires. The process presented allows facile encapsulation and insulation that is suitable for any nanowire structure. In particular, the parylene-C encapsulation functions as an efficient antireflection coating for the nanowires, with reflectivity down to <1% in the visible spectrum. Furthermore, the parylene-C coating increases photoluminescence intensity, suggesting improved light guiding to the NWs. Finally, based on this process, a NW LED was fabricated, which showed good diode performance and a clear electroluminescence signal. We believe the process can expand the fabrication possibilities and improve the performance of optoelectronic nanowire devices. More... »

PAGES

2657-2666

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12274-017-1468-8

DOI

http://dx.doi.org/10.1007/s12274-017-1468-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1084034915


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