Influence of PCBM Nanocrystals on the Donor-Acceptor Polymer Ultraviolet Phototransistors.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanomaterials Pub Date : 2024-10-30 DOI:10.3390/nano14211748

Hong Zhu, Quanhua Chen, Lijian Chen, Rozalina Zakaria, Min-Su Park, Chee Leong Tan, Li Zhu, Yong Xu

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Abstract

Organic phototransistors, renowned for their exceptional biocompatibility, hold promise in phototherapy for tracking the efficacy of photosensitive drugs within treatment areas. Nevertheless, it has been found that organic semiconductors are less effective in detecting ultraviolet (UV) light because of their narrow bandgap. Here, we show that UV photodetection in phototransistors using donor-acceptor (D-A) polymer semiconductors can be significantly enhanced by incorporating PCBM nanocrystals. This integration results in a band mismatch between the nanocrystals and the D-A polymer at the interface. These nanocrystals also demonstrate a notable capability of modulating threshold voltage under UV light. The devices incorporating nanocrystals exhibit a photoresponsivity of 0.16 A/W, surpassing the photoresponsivity of the devices without nanocrystals by 50%. The specific detection rate of devices with nanocrystals is around 2.00 × 10¹⁰ Jones, which is twice as high as that of devices without nanocrystals. The presented findings offer a potential avenue to improve the efficiency of polymer phototransistors for UV detection.

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PCBM 纳米晶体对供体-受体聚合物紫外线光电晶体管的影响。

有机光电晶体管以其优异的生物相容性而闻名，有望在光疗中用于跟踪治疗区域内光敏药物的疗效。然而，人们发现，有机半导体由于其带隙较窄，对紫外线（UV）的探测效果较差。在这里，我们展示了在使用供体-受体（D-A）聚合物半导体的光电晶体管中加入 PCBM 纳米晶体可显著增强紫外线光探测能力。这种整合会导致纳米晶体与 D-A 聚合物在界面上产生带错配。这些纳米晶体还显示出在紫外光下调节阈值电压的显著能力。集成了纳米晶体的器件的光致发光率为 0.16 A/W，比未集成纳米晶体的器件的光致发光率高出 50%。含有纳米晶体的器件的特定检测率约为 2.00 × 1010 琼斯，是不含纳米晶体器件的两倍。这些发现为提高聚合物光电晶体管的紫外线检测效率提供了一条潜在的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.