RII Track-4:NSF: Understanding Perovskite Solar Cell Passivation at The Level of Organic Functional Groups through Ultrafast Spectroscopy

RII Track-4：NSF：通过超快光谱了解有机官能团水平的钙钛矿太阳能电池钝化

• 批准号: 2326788
• 负责人: Qilin Dai
• 金额: $ 29.98万
• 依托单位: Jackson State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-02-01 至 2026-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2326788&HistoricalAwards=false
• 关键词: RII; Track; NSF; Understanding; Perovskite; RII; Track; NSF; Understanding; Perovskite

This EPSCoR Research Infrastructure Improvement Track-4: EPSCoR Research Fellows project provides a fellowship to an Assistant Professor at Jackson State University (JSU), a Historically Black Colleges and Universities (HBCU). The project will also support a JSU graduate student with a training opportunity in ultrafast spectroscopy. The principal investigator (PI) and the graduate student will have a six-month visit at Emory University to extend the expertise to ultrafast spectroscopy for the JSU research community. JSU researchers will learn hands-on skills, measurement principles, data collection, data analysis, and data plotting at Lian group to fully understand this advanced technique of ultrafast spectroscopy. The proposed ultrafast spectroscopy skills and knowledge could only be obtained through an extended on-site visit due to the complexity and the knowledge depth, which is uniquely supported by this NSF EPSCoR RII Track-4 program. With this new technique, the research capacity of the JSU will be significantly enhanced in terms of a better understanding of the perovskite solar cells. Through this project, PI’s career trajectory can be positively impacted and potentially transformed from solar cell device engineering to fundamental understanding of interfaces of optoelectronic devices. The close collaboration between JSU and Emory through this project also benefits other research fields at JSU such as nanomaterials, transistors, batteries, and biomaterials. This NSF EPSCoR RII Track-4 fellowship project provides a unique opportunity to support the PI and one graduate student at JSU to visit Emory University to extend their expertise in ultrafast spectroscopy to understand the charge transfer process affected by organic functional groups (OFGs) at the interfaces in the perovskite solar cells (PSCs). The research goals of this project include: 1) probing the relationship between the types of OFGs and the types of perovskite film defects and investigating the charge transport affected by the types of OFGs; and 2) studying the detailed effects of charge separation, charge recombination, and charge transfer process by fourteen commonly used OFGs in the passivation of the perovskite films. The fourteen OFGs in PSCs will be investigated by passivation of three common specific types of defects of perovskite films such as organic component vacancies, metal vacancies, and iodine vacancies using visible, femtosecond, and nanosecond transient absorption spectra, and time-resolved photoluminescence in nanoseconds, femtoseconds, and picoseconds. This project will provide a fundamental understanding of the relationship between the types of defects of the perovskite films and the types of passivation OFGs to understand the passivation procedures and OFG selection based on the defects of the perovskite films. The influence of different OFGs on the charge separation, charge recombination, and charge transfer processes in the devices will also be demonstrated in this project, which will provide new insights into the charge transport process at the interfaces and a new understanding of the device performance by the interface of the devices via OFG passivation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项EPSCOR研究基础设施改进轨道4：EPSCOR Research Fellows项目为杰克逊州立大学（JSU）的助理教授提供了奖学金，这是一所历史悠久的黑人学院和大学（HBCU）。该项目还将为JSU研究生提供超快光谱学培训机会。首席研究员（PI）和研究生将在埃默里大学（Emory University）进行六个月的访问，以将专业知识扩展到JSU研究社区的超快光谱学。 JSU研究人员将学习动手技能，测量原理，数据收集，数据分析和Lian Group的数据绘制，以充分了解这种超快光谱的高级技术。拟议的超快光谱技能和知识只能通过扩展的现场访问来获得，这是由于复杂性和知识深度，这是由该NSF EPSCOR RII TRECK-4程序独特支持的。有了这项新技术，就更好地理解钙钛矿太阳能电池，JSU的研究能力将显着增强。通过该项目，PI的职业轨迹可以受到积极影响，并有可能从太阳能电池设备工程转变为对光电设备界面的基本了解。 JSU和Emory通过该项目的密切合作也使JSU的其他研究领域受益于纳米材料，晶体管，电池和生物材料。该NSF EPSCOR RII TRECT-4奖学金项目为支持PI和JSU的一名研究生访问Emory University提供了一个独特的机会，以扩展其在超快光谱方面的专业知识，以了解Perovskite Solar Solar Cells（PSCS）在界面的有机官能团（OFGS）影响的电荷转移过程（OFGS）。该项目的研究目标包括：1）探测OFG类型与钙钛矿膜缺陷类型之间的关系，并研究受OFG类型影响的电荷运输； 2）研究电荷分离，电荷重组和电荷转移过程的详细效果，通常在钙钛矿膜的钝化中使用14个。 The fourteen OFGs in PSCs will be investigated by passivation of three common specific types of defects of perovskite films such as organic component vacancies, metal vacancies, and iodine vacancies using visible, femtoseconds, and nanosecond transient abstraction spectra, and time-resolved photoluminescence in nanoseconds, femtoseconds, and picoseconds.该项目将对钙钛矿膜的缺陷类型与G的类型之间的关系提供基本的理解，以理解基于钙钛矿膜的缺陷的钝化程序和OFG选择。该项目还将证明不同OFG对设备的电荷分离，电荷重组和电荷转移过程的影响，该项目将为接口处的充电运输过程提供新的见解，以及通过设备通过OFG passivation进行的设备界面对设备性能的新理解，这些奖项通过ofg passivation进行了评估，这反映了NSF的合法任务及其在范围内的良好的构成，并构成了良好的支持。 标准。