In:
Small, Wiley, Vol. 11, No. 11 ( 2015-03), p. 1293-1300
Abstract:
Graphene/silver nanowire (AgNWs) stacked electrodes, i.e., graphene/AgNWs, are fabricated on a glass substrate by air‐spray coating of AgNWs followed by subsequent encapsulation via a wet transfer of single‐layer graphene (SLG) and multilayer graphene (MLG, reference specimen) sheets. Here, graphene is introduced to improve the optical sintering efficiency of a xenon flash lamp by controlling optical transparency and light absorbing yield in stacked graphene/AgNW electrodes, facilitating the fusion at contacts of AgNWs. Intense pulsed light (IPL) sintering induced ultrafast ( 〈 20 ms) welding of AgNW junctions encapsulated by graphene, resulting in approximately a four‐fold reduction in the sheet resistance of IPL‐treated graphene/AgNWs compared to that of IPL‐treated AgNWs. The role of graphene in IPL‐treated graphene/AgNWs is further investigated as a passivation layer against thermal oxidation and sulfurization. This work demonstrates that optical sintering is an efficient way to provide fast welding of Ag wire‐to‐wire junctions in stacked electrodes of graphene/AgNWs, leading to enhanced conductivity as well as superior long‐term stability under oxygen and sulfur atmospheres.
Type of Medium:
Online Resource
ISSN:
1613-6810
,
1613-6829
DOI:
10.1002/smll.201402474
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2168935-0
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