課題番号 ：S-17-OS-0008
利用形態 ：機器利用
利用課題名（日本語） ：バリア層における銀ナノワイヤ透明電極の制御の研究
Program Title (English) ：effects of barrier layer on the stability of silver nanowires transparent electrodes
利用者名（日本語） ：李玲穎
Username (English) ：Li Lingying
所属名（日本語） ：1) 大阪大学産業科学研究所
Affiliation (English) ：1) Osaka University, the Institute of Scientific and Industrial Research

１．概要（Summary ）
In order to improve the long-term stability of silver nanowires (AgNWs) transparent conductivity electrodes (TCEs), we use a facile method to synthesis reduced graphene oxide (rGO) and coat the rGO layer onto AgNWs TCEs to protect AgNWs from atmosphere corrosion.

２．実験（Experimental）
The Raman-touch VIS-NIR-OUN (S19) was used to explore the surface chemical status of GO layer before and after reduction. Through increasing the reduction time, the intensity variations of D-band and G-band of rGO were evaluated.

３．結果と考察（Results and Discussion）
As shown in Figure 1 (line: redgreenpurpleblue), we found that the intensity ratio of D-band to G-band kept decreasing which indicated that the recovery of sp2 band in GO layer may be triggered and the recovery situation was enhanced with the reduction time extending. However, the current finding is contrary to previous studies which have suggested that the sp2 band in rGO layer was damaged during the reduction, which lead to the increasing intensity ratio of D-band to G-band. Therefore, the obtained results need further confirmations.
A rapid increase was found in the GO/AgNW/PET TCEs after 40s reduction in Figure 1(line: black). This result reflects that the structural damage of GO film was caused by the excessive reduction energy.

Figure 1. Raman spectra evolution for GO/AgNW/PET TCEs treated with the increasing reduction time. The intensity ratio of D peak to G peak is represented for the recovery of sp2 band in GO film.

４．その他・特記事項（Others）
なし

５．論文・学会発表（Publication/Presentation）
なし

６．関連特許（Patent）
なし