比較多元醇化學法及微波合成法所製備之奈米銀線及性質測試

Comparison of silver nanowire and prepared by polyol chemical synthesis and microwave-assisted synthesis and their properties

陳勇君(Yong-Jun Chen)

指導教授 ： 董崇民

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2019年)

https://doi.org/10.6846/TKU.2019.00462

摘要

本研究利用多元醇合成法(Polyol synthesis)及微波合成法(microwave synthesis)製備奈米銀線(AgNW)並將其製備成油墨及透明導電薄膜。第一部分為探討奈米銀線合成參數包括：聚乙烯吡咯烷酮(Poly(vinyl pyrrolidone), PVP)與硝酸銀(Silver nitrite, AgNO3)之莫爾比、氯化鈉(Sodium chloride, NaCl)與硝酸銀(AgNO3)之莫爾比、硝酸銀投料方式、加熱反應時間、純化方法及超音波震盪時間對奈米銀線形態及結構的影響。第二部分為利用微波合成之奈米銀線配製油墨，並探討不同溶劑，包括N-甲基吡咯烷酮 (NMP)、乙醇 (EtOH)、水 (H2O)、異丙醇 (IPA)；不同奈米銀線濃度(0.20、0.30、0.40、0.50 wt%)等對奈米銀線油墨懸浮穩定性及製備出之透明導電薄膜之片電阻和穿透率的影響。藉由調整上述之合成參數，以SEM及TEM觀察奈米銀線之表面形態，多元醇化學法之最適合參數為[PVP]/[AgNO3]= 3.0、[NaCl]/[AgNO3]= 0.15、AgNO3/EG一次性批次加入、溫度160度下反應60分鐘，獲得奈米銀線直徑= 81.2±19.3 nm、長度= 21.6±3.1 µm；微波合成法得到的最適合常數為[PVP]/[AgNO3]=7.0、[NaCl]/[AgNO3]=0.05、AgNO3/EG半批次加入、2分鐘內從室溫到達160度並於160度下恆溫4分鐘，得到奈米銀線直徑= 49.5±6.7 nm、長度= 33.2±1.6 µm。所製備之奈米銀線油墨懸浮穩定性可達7天以上，以噴塗法(Spray coating)製備之透明導電薄膜其薄膜片電阻=86.3±16.1 (ohm/sq)、在550 nm波長之光穿透率=90.3 % (Ω/sq)、霧度為8.72%。

關鍵字

多元醇化學法 ； 微波合成法 ； 奈米銀線 ； 噴塗法 ； 油墨

並列摘要

In this study, silver nano wires were prepared by polyol chemical synthesis and microwave-assisted synthesis and prepared into inks and transparent conductive films.The first part is to discuss the synthesis parameters of silver nanowire. For example：Effect of poly(vinyl pyrrolidone) (PVP) and silver nitrite (AgNO3) mol ratio、sodium chloride (NaCl) and silver nitrite (AgNO3) mol ratio、silver nitrite feeding type、heating times、silver nano solution separation method and Ultrasonication times on morphology and structure of silver nanowire . The second part is the preparation of ink by microwave synthesis of silver nanowire. To investigate the effect of different solvents (H2O、NMP、EtOH、IPA)、silver nanowire concentration(0.20、0.30、0.40、0.50 wt%) on the suspension stability of silver nanowire ink and the sheet resistance and transmittance of transparent conductive film. By the above synthesis parameters, obsernation of surface morphology of silver nanowire by SEM and TEM. The best parameters of the polyol chemical synthesis are [PVP]/[AgNO3]= 3.0、[NaCl]/[AgNO3]= 0.15、AgNO3/EG add once、heating at T160 for 60 min, obrain silver nanowire diameter 81.2±19.3 nm、length 21.6±3.1 µm；The best parameters for microwave synthesis are [PVP]/[AgNO3]=7.0、[NaCl]/[AgNO3]=0.05、AgNO3/EG semi-batch、2 min R.T. to T160 then hold 4 min，obrain silver nanowire diameter 49.5±6.7 nm、length 33.2±1.6 µm. Silver nanowire ink stability for more 7 days. Preparation of transparent conductive film by spray coating obtain sheet resistance 86.3±16.1 (ohm/sq), transmittance on wavelength at 550 nm is 90.3 % (Ω/sq)、haze 8.72%。

並列關鍵字

polyol chemical synthesis ； microwace synthesis ； silver nanowire ； spray coating ； ink

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