Semiconducting Nanowire-Based Optoelectronic Fibers

Abstract : The recent ability to integrate semiconductor-based optoelectronic functionalities within thin fibers is opening intriguing opportunities for flexible electronics and advanced textiles. The scalable integration of high-quality semiconducting devices within functional fibers however remains a challenge. It is difficult with current strategies to combine high light absorption, good microstructure and efficient electrical contact. The growth of semiconducting nanowires is a great tool to control crystal orientation and ensure a combination of light absorption and charge extraction for efficient photodetection. Thus far, however, leveraging the attributes of nanowires has remained seemingly incompatible with fiber materials, geometry, and processing approaches. Here, the integration of semiconducting nanowire-based devices at the tip and along the length of polymer fibers is demonstrated for the first time. The scalable thermal drawing process is combined with a simple sonochemical treatment to grow nanowires out of electrically addressed amorphous selenium domains. First principles density-functional theory calculations show that this approach enables to tailor the surface energy of crystal facets and favors nanowire growth along a preferred orientation, resulting in fiber-integrated devices of unprecedented performance. This novel platform is exploited to demonstrate an all-fiber-integrated fluorescence imaging system, highlighting novel opportunities in sensing, advanced optical probes, and smart textiles.
Liste complète des métadonnées

https://hal-centralesupelec.archives-ouvertes.fr/hal-01661228
Contributeur : Arouna Darga <>
Soumis le : lundi 11 décembre 2017 - 18:36:09
Dernière modification le : vendredi 31 août 2018 - 08:54:38

Lien texte intégral

Identifiants

Citation

Wei Yan, Yunpeng Qu, Arouna Darga, Tapajyoti Das Gupta, Dang Tùng Nguyên, et al.. Semiconducting Nanowire-Based Optoelectronic Fibers. Advanced Materials, 2017, 29 (27), 〈10.1002/adma.201700681〉. 〈hal-01661228〉

Partager

Métriques

Consultations de la notice

115