Scholarlink

<p>This study explores how incorporating barium (Ba) into zinc sulfide (ZnS) can influence its effectiveness as an ammonia gas sensor operating at room temperature. The materials were synthesized using a cost-effective sol–gel method. The Ba-doped ZnS films with different concentrations (1%, 2%, 3%, 4%) were formed by depositing the prepared powders onto glass slides, followed by attaching aluminum electrodes to complete the sensor setup. The sizes of the as-prepared nanoparticles were found to be in the 26–35&#xa0;nm range. The characterizations were performed using various techniques, including FESEM, EDX, XRD, PL emission analysis, EPR, and <i>I</i>–<i>V</i> measurements. The gas-sensing behavior was evaluated at room temperature without the application of elevated temperatures. The findings revealed that incorporating Ba ions in ZnS increases its response sensitivity and response recovery time upon a certain doping percentage. In contrast, increasing Ba content to a certain level led to reduced sensitivity while keeping improvements for both response and recovery times. Notably, the sample with 4% Ba demonstrated the fastest behavior, with a response time of 39&#xa0;s and a recovery time of 42&#xa0;s. The sample with 3% Ba exhibited the best sensitivity of 5.7. These improvements at ambient conditions make doping with Ba offer a much safer and more energy-efficient gas sensor device by enhancing the response dynamics parameter of ZnS sensors, which often need high temperature and high-power demands.</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

Enhanced room-temperature ammonia gas-sensing performance of Ba-doped ZnS nanostructured films

  • 期刊论文

  • 发表日期：

    2026年4月25日

查看全文
  • Hasanain S. Azeez,
  • Ahmed M. Hussein,
  • Mohammed M. Salim,
  • Rusul S. Hadi,
  • Mukhklis M. Ismail,
  • Ibtisam R. Karim

摘要

This study explores how incorporating barium (Ba) into zinc sulfide (ZnS) can influence its effectiveness as an ammonia gas sensor operating at room temperature. The materials were synthesized using a cost-effective sol–gel method. The Ba-doped ZnS films with different concentrations (1%, 2%, 3%, 4%) were formed by depositing the prepared powders onto glass slides, followed by attaching aluminum electrodes to complete the sensor setup. The sizes of the as-prepared nanoparticles were found to be in the 26–35 nm range. The characterizations were performed using various techniques, including FESEM, EDX, XRD, PL emission analysis, EPR, and I–V measurements. The gas-sensing behavior was evaluated at room temperature without the application of elevated temperatures. The findings revealed that incorporating Ba ions in ZnS increases its response sensitivity and response recovery time upon a certain doping percentage. In contrast, increasing Ba content to a certain level led to reduced sensitivity while keeping improvements for both response and recovery times. Notably, the sample with 4% Ba demonstrated the fastest behavior, with a response time of 39 s and a recovery time of 42 s. The sample with 3% Ba exhibited the best sensitivity of 5.7. These improvements at ambient conditions make doping with Ba offer a much safer and more energy-efficient gas sensor device by enhancing the response dynamics parameter of ZnS sensors, which often need high temperature and high-power demands.