{"title":"Toward ultrafast soft x-ray spectroscopy of organic photovoltaic devices","authors":"Douglas Garratt, Mary Matthews, Jon Marangos","doi":"10.1063/4.0000214","DOIUrl":null,"url":null,"abstract":"Novel ultrafast x-ray sources based on high harmonic generation and at x-ray free electron lasers are opening up new opportunities to resolve complex ultrafast processes in condensed phase systems with exceptional temporal resolution and atomic site specificity. In this perspective, we present techniques for resolving charge localization, transfer, and separation processes in organic semiconductors and organic photovoltaic devices with time-resolved soft x-ray spectroscopy. We review recent results in ultrafast soft x-ray spectroscopy of these systems and discuss routes to overcome the technical challenges in performing time-resolved x-ray experiments on photosensitive materials with poor thermal conductivity and low pump intensity thresholds for nonlinear effects.","PeriodicalId":21992,"journal":{"name":"Structural Dynamics","volume":"13 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structural Dynamics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/4.0000214","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Novel ultrafast x-ray sources based on high harmonic generation and at x-ray free electron lasers are opening up new opportunities to resolve complex ultrafast processes in condensed phase systems with exceptional temporal resolution and atomic site specificity. In this perspective, we present techniques for resolving charge localization, transfer, and separation processes in organic semiconductors and organic photovoltaic devices with time-resolved soft x-ray spectroscopy. We review recent results in ultrafast soft x-ray spectroscopy of these systems and discuss routes to overcome the technical challenges in performing time-resolved x-ray experiments on photosensitive materials with poor thermal conductivity and low pump intensity thresholds for nonlinear effects.
基于高次谐波发生和 X 射线自由电子激光器的新型超快 X 射线源正在为以优异的时间分辨率和原子位点特异性解析凝聚相系统中复杂的超快过程带来新的机遇。在这一视角中,我们介绍了利用时间分辨软 X 射线光谱解析有机半导体和有机光伏器件中电荷定位、转移和分离过程的技术。我们回顾了这些系统在超快软 X 射线光谱学方面的最新成果,并讨论了如何克服在热传导性差、非线性效应泵浦强度阈值低的光敏材料上进行时间分辨 X 射线实验所面临的技术挑战。