EAGER:TDM Solar Cells: Collaborative Research: 30%-Efficient, Stable Perovskite/Silicon Monolithic Tandem Solar Cells

EAGER:TDM%20Solar%20%20%20Cells:%20Collaborative%20研究:%20%20%2030%-高效、%20Stable%20钙钛矿/硅%20Monolithic%20Tandem%20Solar%20Cells

• 批准号: 1664710
• 负责人: Zachary Holman
• 金额: $ 11.02万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-04-15 至 2019-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1664710&HistoricalAwards=false
• 关键词: EAGER; TDM; Solar; Cells; Collaborative

AbstractNontechnical DescriptionSolar cells, which harvest energy from the sun and generate electricity, are diversifying our energy portfolio and will be an important part of reducing our dependence on fossil fuels and preventing undesirable climate change. It is important to make solar panels as efficient as possible so that the number of panels needed to obtain a certain amount of power can be reduced in order to save on installation costs. Tandem cells, comprised of a top cell that harvests the visible portion of the spectrum and a bottom cell that harvests the infrared portion, are the most promising way to achieve higher efficiencies. Silicon, which is used in approximately 92% of the solar panels that are manufactured each year, is ideal for the bottom cell and typically has 16-21 % efficiency by itself. Perovskite semiconductors are highly attractive for the top cell because they can be tuned to have the right bandgap and have efficiency as high as 22%. The objective of this project is to demonstrate the first 30%-efficient perovskite/silicon tandem solar cell. Technical DescriptionThis project describes plans for a perovskite expert, Professor Michael McGehee, to partner with a silicon expert, Professor Zachary Holman, to make perovskites/silicon tandem solar cells. This team has made a prototype two-terminal monolithic device with a power conversion efficiency of 25.3 %. They hold the world record for this type of device and are in a very strong position to increase the efficiency to 30% over the next two years. This development is especially exciting because their packaged perovskite solar cells have already passed the PV industry standard damp heat and temperature cycling tests and it is likely that panels with these cells could be manufactured at a cost of $100/m2. The bandgap of perovskites can be tuned from 1.2 eV to 2.3 eV using the materials set ABX3, where A is a mixture of methylammonium, formamidinium or cesium, B is a mixture of tin and lead, and X is a mixture of bromine or iodine. The most important research goal of this project is to find the optimal combination of these components for making a stable and high-quality semiconductor with a bandgap of 1.8 eV. The team will thoroughly characterize the semiconductors it makes to guide the process of optimizing the properties. Additional research goals of this project are to develop high-mobility TCO layers for the front of the tandem solar cells, improve the infrared response of the silicon bottom cell while decreasing its cost via a porous dielectric/metal rear reflector, and fabricate PDMS layers with scattering textures to be used at the front of the tandem to reduce reflectance.This project has the potential to change our future energy landscape through the development of efficient yet inexpensive PV technologies. The project will also train a diverse pool of students and the results will be disseminated broadly. Holman is the PI of an NSF REU site into which the proposed project will be integrated. Approximately once every 18 months McGehee gives a lecture that is intended to be easy to understand even for people who are not yet scientists and posts it on YouTube. These lectures are typically viewed more than 20,000 times by a wide variety of people.

从太阳中收集能量并产生电能的摘要非技术描述极性细胞正在使我们的能量组合多样化，并且将成为减少我们对化石燃料的依赖并防止不良气候变化的重要组成部分。重要的是要使太阳能电池板尽可能高效，以便可以减少获得一定量的功率的面板数量以节省安装成本。串联细胞由收获光谱的可见部分和收获红外部分的底部细胞组成，是实现较高效率的最有希望的方法。硅每年在大约92％的太阳能电池板中使用，是底部电池的理想选择，通常具有16-21％的效率。钙钛矿半导体对顶部细胞具有很高的吸引力，因为它们可以调节以具有正确的带隙，并且效率高达22％。该项目的目的是证明前30％效率的钙钛矿/硅串联太阳能电池。技术描述该项目描述了钙钛矿专家Michael McGehee教授与硅专家，Zachary Holman教授合作，以制造Perovskites/Silicon Tandem太阳能电池。该团队制造了一个原型的两端整体设备，其功率转换效率为25.3％。他们保持这种类型的设备的世界记录，并且在未来两年内将效率提高到30％。这种开发特别令人兴奋，因为它们包装的钙钛矿太阳能电池已经通过了PV行业标准潮湿的热量和温度循环测试，并且具有这些电池的面板很可能以100美元/m2的价格制造。使用材料集ABX3可以将钙钛矿的带隙从1.2 eV调整为2.3 eV，其中A是甲基铵，甲米氨基或剖宫产的混合物，B是TIN和铅的混合物，而X是溴或碘的混合物。该项目最重要的研究目标是找到这些组件的最佳组合，以制造稳定且高质量的半导体，带隙为1.8 eV。该团队将彻底表征其指导优化属性过程的半导体。该项目的其他研究目标是为串联太阳能电池的前部开发高弹性TCO层，改善硅底部电池的红外响应，同时通过多孔介电/金属后反射器降低其成本，并制造PDMS层，并与散射纹理相比，可以通过不断的反射范围来降低能量的范围。技术。该项目还将培训各种学生，结果将大量传播。霍尔曼（Holman）是NSF REU站点的PI，将其集成到该网站。麦吉希（McGehee）大约每18个月进行一次演讲，即使对于尚未科学家并将其发布在YouTube上的人来说，该讲座即使是易于理解的。 这些讲座通常会被各种各样的人观看超过20,000次。

项目成果

Optical modeling of wide-bandgap perovskite and perovskite/silicon tandem solar cells using complex refractive indices for arbitrary-bandgap perovskite absorbers

• DOI: 10.1364/oe.26.027441
• 发表时间: 2018-10-15
• 期刊: OPTICS EXPRESS
• 影响因子: 3.8
• 作者: Manzoor, Salman;Haeusele, Jakob;Holman, Zachary C.
• 通讯作者: Holman, Zachary C.