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Solution-processable small molecule based all-organic ultraviolet photodetector
Synthetic Metals ( IF 4.0 ) Pub Date : 2021-08-20 , DOI: 10.1016/j.synthmet.2021.116883
Rajdeep Dhar 1 , Jagarapu Ramakrishna 2 , Vinay Nawani 3 , Prashanth Kumar Manda 4 , Dhritiman Gupta 3 , Parthasarathy Venkatakrishnan 2 , Soumya Dutta 1
Affiliation  

A tetramethoxyfluorene derivative (TMD) based small molecule (C53H54O4) has been used as a donor in a bulk-heterojunction donor-acceptor blend system to realize room temperature solution-processed ultraviolet (UV) photodetector. A systematic opto-electronic study to optimize the weight ratio of the blend of TMD and a common acceptor [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) is presented in this report. The fabricated detector is found to cover the most harmful UVA region while transmitting nearly the entire visible spectrum of light. The responsivity of 6 × 10−2 A/W, specific detectivity of 9.36 × 1011Jones and photosensitivity of 105, which are on par with the existing UV photodetectors reported in the literature, are obtained at the wavelength 394 nm under zero bias condition.



中文翻译:

基于溶液可加工小分子的全有机紫外光电探测器

基于四甲氧基芴衍生物 (TMD) 的小分子 (C 53 H 54 O 4 ) 已被用作本体-异质结供体-受体共混系统中的供体,以实现室温溶液处理的紫外 (UV) 光电探测器。本报告介绍了一项系统的光电研究,以优化 TMD 和共​​同受体 [6,6]-苯基-C61 丁酸甲酯 (PCBM) 的混合物的重量比。发现制造的探测器覆盖了最有害的 UVA 区域,同时几乎透射了整个可见光谱。6 × 10 -2 A/W的响应度,9 的比检测率36 × 10 11琼斯和光敏度 10 5与文献中报道的现有紫外光电探测器相当,是在零偏压条件下在 394 nm 波长处获得的。

更新日期:2021-08-20
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