{"title":"Optimization of CsPbBr3/PVDF composite for enhanced UV photodetection application†","authors":"Amr Elattar, Okenwa Okoli and Tarik Dickens","doi":"10.1039/D4RA07369J","DOIUrl":null,"url":null,"abstract":"<p >Halide perovskites have exhibited great research impact for developing innovative materials with novel properties. Here, we report the synthesis of different caesium lead bromide perovskites using different (Cs/Pb) molar ratios and fabrication of their corresponding perovskite/polyvinylidene fluoride (PVDF) composites, as well as study of their structural and UV-photodetection properties. Spin-coated perovskite/PVDF composite thin films revealed strong oriented XRD diffraction peaks along the <em>c</em>-axis direction (00l) with homogeneously distributed perovskite microcrystals in the polymer matrix. The high-Cs containing perovskite/PVDF composite, with Cs/Pb (3/1) molar ratio, demonstrated the highest green emission under UV light and its corresponding UV-photodetector exhibited the highest UV photo-responsivity. These results highlight the importance of structural modulation and additive manufacturing for tailoring the optoelectronic properties of halide perovskites.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36416-36422"},"PeriodicalIF":3.9000,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11562920/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"RSC Advances","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ra/d4ra07369j","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Halide perovskites have exhibited great research impact for developing innovative materials with novel properties. Here, we report the synthesis of different caesium lead bromide perovskites using different (Cs/Pb) molar ratios and fabrication of their corresponding perovskite/polyvinylidene fluoride (PVDF) composites, as well as study of their structural and UV-photodetection properties. Spin-coated perovskite/PVDF composite thin films revealed strong oriented XRD diffraction peaks along the c-axis direction (00l) with homogeneously distributed perovskite microcrystals in the polymer matrix. The high-Cs containing perovskite/PVDF composite, with Cs/Pb (3/1) molar ratio, demonstrated the highest green emission under UV light and its corresponding UV-photodetector exhibited the highest UV photo-responsivity. These results highlight the importance of structural modulation and additive manufacturing for tailoring the optoelectronic properties of halide perovskites.
卤化物包光体在开发具有新颖特性的创新材料方面具有重大的研究影响。在此，我们报告了利用不同的（Cs/Pb）摩尔比合成不同的溴化铯铅包晶石，并制备了相应的包晶石/聚偏二氟乙烯（PVDF）复合材料，以及对其结构和紫外光探测性能的研究。旋涂包晶/聚偏二氟乙烯（PVDF）复合薄膜显示出沿 c 轴方向（00l）的强取向 XRD 衍射峰，聚合物基体中均匀分布着包晶微晶。Cs/Pb（3/1）摩尔比的高Cs含量包晶/PVDF复合材料在紫外光下的绿色发射率最高，其相应的紫外光探测器的紫外光响应率也最高。这些结果凸显了结构调制和增材制造对定制卤化物包晶光电特性的重要性。
期刊介绍：
An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.
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