Junjun Xue, Xu Wang, Guanyu Xu, Xinya Tao, Tongdao Pan, Zhouyu Chen, Qing Cai, Pengfei Shao, Guofeng Yang, Zengli Huang, Ting Zhi, Ke Wang, Bin Liu, Dunjun Chen, Rong Zhang, Jin Wang
{"title":"多激子产生提高超过100%量子效率的光电化学光探测","authors":"Junjun Xue, Xu Wang, Guanyu Xu, Xinya Tao, Tongdao Pan, Zhouyu Chen, Qing Cai, Pengfei Shao, Guofeng Yang, Zengli Huang, Ting Zhi, Ke Wang, Bin Liu, Dunjun Chen, Rong Zhang, Jin Wang","doi":"10.1038/s41467-025-60420-1","DOIUrl":null,"url":null,"abstract":"<p>The self-powered photoelectrochemical components themselves featured advancements in operating independently without external supply. Ultimately, due to lack of assistance from the external bias, the photoelectrochemical response is commonly restricted by the deficient photo-quantum efficiency for the absence of carrier multiplication. This work demonstrates a self-powered photoelectrochemical photodetector based on CuO<sub>x</sub>/AlGaN nanowires with staggered band structure and enhanced built-in potential for efficient exciton extraction. The generated multiple excitons within reach-through CuO<sub>x</sub> layer could be speedily separated before Auger recombination. This yields a 131.5% external quantum efficiency and 270.6 mA W<sup>−1</sup> responsivity at 255 nm. The work confirms the role of multiple exciton generation in photoelectrochemical systems, offering a solution on paving path of advance for self-powered optoelectronics and weak-light UV imaging applications.</p>","PeriodicalId":19066,"journal":{"name":"Nature Communications","volume":"18 1","pages":""},"PeriodicalIF":15.7000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multiple exciton generation boosting over 100% quantum efficiency photoelectrochemical photodetection\",\"authors\":\"Junjun Xue, Xu Wang, Guanyu Xu, Xinya Tao, Tongdao Pan, Zhouyu Chen, Qing Cai, Pengfei Shao, Guofeng Yang, Zengli Huang, Ting Zhi, Ke Wang, Bin Liu, Dunjun Chen, Rong Zhang, Jin Wang\",\"doi\":\"10.1038/s41467-025-60420-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The self-powered photoelectrochemical components themselves featured advancements in operating independently without external supply. Ultimately, due to lack of assistance from the external bias, the photoelectrochemical response is commonly restricted by the deficient photo-quantum efficiency for the absence of carrier multiplication. This work demonstrates a self-powered photoelectrochemical photodetector based on CuO<sub>x</sub>/AlGaN nanowires with staggered band structure and enhanced built-in potential for efficient exciton extraction. The generated multiple excitons within reach-through CuO<sub>x</sub> layer could be speedily separated before Auger recombination. This yields a 131.5% external quantum efficiency and 270.6 mA W<sup>−1</sup> responsivity at 255 nm. The work confirms the role of multiple exciton generation in photoelectrochemical systems, offering a solution on paving path of advance for self-powered optoelectronics and weak-light UV imaging applications.</p>\",\"PeriodicalId\":19066,\"journal\":{\"name\":\"Nature Communications\",\"volume\":\"18 1\",\"pages\":\"\"},\"PeriodicalIF\":15.7000,\"publicationDate\":\"2025-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nature Communications\",\"FirstCategoryId\":\"103\",\"ListUrlMain\":\"https://doi.org/10.1038/s41467-025-60420-1\",\"RegionNum\":1,\"RegionCategory\":\"综合性期刊\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MULTIDISCIPLINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Communications","FirstCategoryId":"103","ListUrlMain":"https://doi.org/10.1038/s41467-025-60420-1","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
Multiple exciton generation boosting over 100% quantum efficiency photoelectrochemical photodetection
The self-powered photoelectrochemical components themselves featured advancements in operating independently without external supply. Ultimately, due to lack of assistance from the external bias, the photoelectrochemical response is commonly restricted by the deficient photo-quantum efficiency for the absence of carrier multiplication. This work demonstrates a self-powered photoelectrochemical photodetector based on CuOx/AlGaN nanowires with staggered band structure and enhanced built-in potential for efficient exciton extraction. The generated multiple excitons within reach-through CuOx layer could be speedily separated before Auger recombination. This yields a 131.5% external quantum efficiency and 270.6 mA W−1 responsivity at 255 nm. The work confirms the role of multiple exciton generation in photoelectrochemical systems, offering a solution on paving path of advance for self-powered optoelectronics and weak-light UV imaging applications.
期刊介绍：
Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.
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