Scholarlink

<p>The effect of pH in hydrothermal synthesis on the structural properties and photodetector performance of ZnO nanorods has been successfully investigated. Calculating the molar ratio among zinc acetate dihydrate (ZAD), methenamine (ME), and sodium hydroxide (NaOH) is important to obtain pH variations. By applying ZAD:ME (1:1), ZAD:NaOH (1:1), and ZAD:ME:NaOH (1:1:1), pH variations of 5.96 (S1), 6.80 (S2), and 7.23 (S3) were obtained, respectively. Morphological images from field-emission scanning electron microscope (FESEM) show that the average diameter of ZnO nanorods is about 75.6 nm (S1), 146.4 nm (S2), dan 173.8 nm (S3). From the optical properties analysis carried out using UV–visible spectroscopy (UV–vis), the transmittance increased by increasing the pH, while the absorption showed a different pattern. The bandgap values are 2.6, 3.1, and 3.2 eV for the S1, S2, and S3 samples, respectively. Furthermore, based on current–voltage (I-V) curves, the S3 sample has the highest UV sensitivity with a very fast response time (7.1 s for rise time and 3.9 s for decay time). This study is important to realize future optoelectronic technology.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The impact of pH in the hydrothermal synthesis of ZnO nanorods on the structural properties and UV detection performance

  • 期刊论文

  • 发表日期：

    2025年1月13日

查看全文
  • Eka Nurfani,
  • Cindy Chotimah,
  • Wahyu Solafide Sipahutar,
  • Resti Marlina

摘要

The effect of pH in hydrothermal synthesis on the structural properties and photodetector performance of ZnO nanorods has been successfully investigated. Calculating the molar ratio among zinc acetate dihydrate (ZAD), methenamine (ME), and sodium hydroxide (NaOH) is important to obtain pH variations. By applying ZAD:ME (1:1), ZAD:NaOH (1:1), and ZAD:ME:NaOH (1:1:1), pH variations of 5.96 (S1), 6.80 (S2), and 7.23 (S3) were obtained, respectively. Morphological images from field-emission scanning electron microscope (FESEM) show that the average diameter of ZnO nanorods is about 75.6 nm (S1), 146.4 nm (S2), dan 173.8 nm (S3). From the optical properties analysis carried out using UV–visible spectroscopy (UV–vis), the transmittance increased by increasing the pH, while the absorption showed a different pattern. The bandgap values are 2.6, 3.1, and 3.2 eV for the S1, S2, and S3 samples, respectively. Furthermore, based on current–voltage (I-V) curves, the S3 sample has the highest UV sensitivity with a very fast response time (7.1 s for rise time and 3.9 s for decay time). This study is important to realize future optoelectronic technology.