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In Situ Growth of Gold Nanofilms with Branched Structures in the Presence of Organosulfur for High-Performance Flexible Electronics
作者:Minqiang Xia, Lingui Hu, Yulu Ye, Yunbo Li.
關(guān)鍵字:what are subjects Chemical structure Gold Heat treatment Metal nanoparticles Thin films
論文來源:期刊
具體來源:Langmuir
發(fā)表時間:2024年

Herein, a novel method is presented for the in situ growth of

gold nanofilms with branched structures in the presence of organosulfur.

The key feature in this approach is the Rayleigh instability of

ultrathin gold nanowires (AuNWs) without oleylamine (OAm), which allows

the ultrathin AuNWs to decompose into gold nanoparticles (AuNPs) and the

AuNPs to in situ grow into branched structures for

high-performance stability and electrical conductivity. The sheet

resistance of the gold nanofilms initially sharply decreased, whereas it

subsequently slightly increased with the concentration of CS(NH2)2

until it exceeded the optimal range. After undergoing a 10 min heat

treatment at 150 °C, the sheet resistance of the nanofilms was further

reduced to 18 Ω/sq, which could be maintained for more than five months.

The internal structure becomes fully grown and denser, forming a

branched structure after heat treatment. Only certain organosulfurs can

improve the electrical properties of the gold nanofilms, and the

mechanism of organosulfur in the in situ growth of gold nanofilms

with branched structures has also been presented. Overall, this novel

method provides a straightforward and convenient approach to obtaining

gold nanomaterials with branched structures, holding great potential

promise for applications in flexible electronics, catalysis, and energy

fields.