High Mobility Hole Extraction Materials for Colloidal Quantum Dot Solar Cells

用于胶体量子点太阳能电池的高迁移率空穴提取材料

• 批准号: 1807342
• 负责人: Susanna Thon
• 金额: $ 37万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-01 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1807342&HistoricalAwards=false
• 关键词: Mobility; Hole; Extraction; Materials; Colloidal

Nontechnical Description: Generating inexpensive electricity from sunlight could transform the way society meets its energy needs. Newer materials for solar cells, such as those based on liquid paints, are inexpensive and can be coated on a variety of surfaces; however, their power output is low compared to heavier conventional technology. The research team seeks to increase the power output of next-generation solar cells by developing new materials that more efficiently conduct electricity. The project has the potential to address broad societal goals in the development of more efficient renewable energy technologies, as alternatives to costly, polluting and unsustainable fossil fuels, by improving the power conversion efficiency of lightweight, cheap, and flexible solar materials. Research activities are integrated with a comprehensive education and outreach plan designed to introduce elementary students, undergraduates, and graduate students to the fields of nanotechnology and sustainable engineering. Research team members serve as mentors for the STEM Achievement in Baltimore Elementary Schools (SABES) program, regularly visiting elementary school classrooms in high-minority, low-income neighborhoods to engage students and teachers in hands-on engineering enrichment projects. Technical Description: The objective of this project is to build new high mobility hole extraction materials for PbS colloidal quantum dot (CQD) solar cells, addressing the efficiency-limiting factor in these devices. The materials routes being explored include new small organic molecule ligands, charge transfer dopants, PbSe-based CQD thin films, and stoichiometry-based doping control. We employ chemical synthesis, solution-processed device fabrication, and electrical and optical characterization. The three main goals of the project are to (1) solve the efficiency-limiting problem of low hole mobility in the hole extraction layer of PbS CQD solar cells using new doping strategies; (2) build proof-of-principle PbS CQD-based single- and multi-junction solar cells using the new hole extraction materials; and (3) answer fundamental questions about doping mechanisms and charge transport in nanoparticle-based thin film materials. This work aims to increase the efficiency of CQD solar cells so that they become competitive with conventional photovoltaic technology, representing a new flexible route for solar energy harvesting. The novel materials have the potential to be used in multijunction solar cells, transparent photovoltaics, flexible and wearable energy harvesting devices, and other photonic and optoelectronic technologies such as light emitting diodes and photosensors. The insights gained serve as foundations for understanding nanoscale charge transport in a wider range of structured materials systems. Research activities are integrated with an education plan that involves the development of new interdisciplinary undergraduate and graduate courses, focused on current research areas in renewable energy and nanomaterials, as well as STEM enrichment in public elementary schools in Baltimore City.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.

非技术描述：利用太阳能发电可以改变社会满足能源需求的方式。太阳能电池的新材料，如基于液体涂料的材料，价格低廉，可以涂在各种各样的表面上；然而，与较重的传统技术相比，它们的功率输出很低。研究组的目标是通过开发更有效导电的新材料，提高下一代太阳能电池的输出功率。该项目有潜力通过提高轻质、廉价和灵活的太阳能材料的能量转换效率，在开发更高效的可再生能源技术方面解决广泛的社会目标，作为昂贵、污染和不可持续的化石燃料的替代品。研究活动与全面的教育和推广计划相结合，旨在向小学生、本科生和研究生介绍纳米技术和可持续工程领域。研究团队成员担任巴尔的摩小学STEM成就（SABES）项目的导师，定期访问高少数族裔、低收入社区的小学教室，让学生和教师参与动手工程丰富项目。技术描述：该项目的目标是为PbS胶体量子点（CQD）太阳能电池构建新的高迁移率空穴提取材料，解决这些设备的效率限制因素。正在探索的材料路线包括新的小有机分子配体、电荷转移掺杂剂、基于pbse的CQD薄膜和基于化学计量学的掺杂控制。我们采用化学合成，溶液处理器件制造，电学和光学表征。该项目的三个主要目标是：(1)利用新的掺杂策略解决PbS CQD太阳能电池空穴萃取层中低空穴迁移率的效率限制问题；(2)利用新的空穴提取材料构建基于PbS cqd的单结和多结太阳能电池；(3)回答纳米颗粒基薄膜材料中掺杂机制和电荷输运的基本问题。这项工作旨在提高CQD太阳能电池的效率，使其与传统光伏技术相竞争，代表了太阳能收集的一种新的灵活途径。这种新型材料有潜力用于多结太阳能电池、透明光伏电池、柔性和可穿戴能量收集设备，以及其他光子和光电技术，如发光二极管和光传感器。所获得的见解为理解更广泛的结构材料系统中的纳米级电荷输运奠定了基础。研究活动与教育计划相结合，该计划涉及开发新的跨学科本科和研究生课程，重点关注可再生能源和纳米材料的当前研究领域，以及巴尔的摩市公立小学的STEM丰富。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Spray-Cast Electrodes in Colloidal Quantum Dot Solar Cells for Portable Solar Energy Manufacturing

用于便携式太阳能制造的胶体量子点太阳能电池中的喷铸电极

• DOI: 10.1109/pvsc40753.2019.8980617
• 发表时间: 2019
• 期刊: Spray-Cast Electrodes in Colloidal Quantum Dot Solar Cells for Portable Solar Energy Manufacturing
• 作者: Li, Lulin;Qiu, Botong;Lu, Chengchangfeng;Shimabukuro, Laura;Lin, Yida;Thon, Susanna M.
• 通讯作者: Thon, Susanna M.

Sulfur-Infused Hole Transport Materials to Overcome Performance-Limiting Transport in Colloidal Quantum Dot Solar Cells

注入硫的空穴传输材料可克服胶体量子点太阳能电池中传输性能限制

• DOI: 10.1021/acsenergylett.0c01586
• 发表时间: 2020
• 期刊: ACS Energy Letters
• 影响因子: 22
• 作者: Chiu, Arlene;Rong, Eric;Bambini, Christianna;Lin, Yida;Lu, Chengchangfeng;Thon, Susanna M.
• 通讯作者: Thon, Susanna M.

Predicting Materials Parameters in Colloidal Quantum Dot Photovoltaic Devices Using Machine Learning Models Trained On Experimental Data

使用根据实验数据训练的机器学习模型预测胶体量子点光伏器件中的材料参数

• DOI: 10.1109/pvsc48317.2022.9938867
• 发表时间: 2022
• 期刊: 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC
• 作者: Lee, Hoon Jeong;Hofelmann, Ariana B.;Lin, Yida;Thon, Susanna M.
• 通讯作者: Thon, Susanna M.

Local Defects in Colloidal Quantum Dot Thin Films Measured via Spatially Resolved Multi‐Modal Optoelectronic Spectroscopy

• DOI: 10.1002/adma.201906602
• 发表时间: 2020-02
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Yida Lin;Tina Gao;Xiaoyun Pan;M. Kamenetska;S. Thon

New Chalcogenide-Based Hole Transport Materials for Colloidal Quantum Dot Photovoltaics

用于胶体量子点光伏的新型硫族化物空穴传输材料

• 发表时间: 2021
• 期刊: Conference record of the IEEE Photovoltaic Specialists Conference
• 作者: Rong, Eric;Bambini, Christianna;Lin, Yida;Lu, Chengchangfeng;Thon, Susanna M.
• 通讯作者: Thon, Susanna M.