Organic photovoltaics and organic-perovskite tandem solar cells

项目概述：近年来，金属卤化物钙钛矿光致发光材料取得了巨大进展。钙钛矿PV的关键特性之一是它们可以产生非常高的开路电压，具有相对较宽的带隙。这使得它们能够用于“多结”电池，其中宽带隙钙钛矿电池与较窄带隙电池组合，所述较窄带隙电池是钙钛矿或传统的PV材料，例如硅。然而，最近，有机光致发光器件在绝对效率方面取得了重大进展，并且采用低带隙“非富勒烯”电子受体的有机电池现在可以提供高达18%的效率。这意味着存在将宽带隙钙钛矿与窄带隙有机物组合的机会，并且提供非常高效率的轻质薄膜有机物上钙钛矿串联技术。在这个项目中，Nicky将开发和研究有机光伏电池，这些电池与串联设备中的钙钛矿相匹配。在第一种情况下，他将研究OPV电池中不同的电荷提取层，并确定调整这种器件中的能级对准的影响。他将继续提高效率，并将这些设备集成到完整的串联电池中。简要描述研究背景，包括潜在影响;有与钙钛矿光伏和有机光伏相关的重大研究工作，该项目将有助于这些整体研究领域。牛津光伏，一家当地公司推进新的光伏技术，正计划推出其第一个制造产品，钙钛矿硅串联电池，明年年中。在所有钙钛矿薄膜技术和柔性有机光伏技术上也有重大的学术和工业努力。该项目将有机和钙钛矿技术相结合，在未来3年内可应用于工业领域。目的和目标：了解和开发新材料的影响，以提高有机光伏电池的稳定性和效率，并将其整合到钙钛矿-有机串联电池中。研究方法的新奇;我们将使用薄膜沉积方法的组合，包括溅射镀膜，原子层沉积和薄膜热蒸发，采用目前正在安装的EPSRC先进功能材料集群沉积设施。我们还将采用紫外光电子能谱仪，目前正在订购联合收割机与群集工具。符合EPSRC的战略和研究领域：该项目福尔斯属于EPSRC的物理科学增长领域，能源应用材料，关于“能源应用中使用的功能材料的合成，表征和理论理解”，并且“包括对光电（PV）和半导体潜在材料的基础研究。“生产成果”将是为光伏引入“下一代创新和颠覆性技术”，实现“向可持续社会”的转型，并通过“能源安全”提高国家复原力。太阳能技术是一个维护领域，EPSRC的战略重点是“将更加关注薄膜和新材料（例如可能改变游戏规则的钙钛矿）。"

A summary of the project:In recent years there have been massive advances with metal halide perovskite photovoltaics. One of the key properties of perovskite PV, is that they can generate very high open-circuit voltages with relatively wide band gaps. This enables their use in "multi-junction" cells, where the wide band gap perovskite cell, is combined with a narrower band gap cell, which is either perovskite or a traditional PV material such as silicon. Recently however, organic photovoltaics have made significant strides forward in terms of absolute efficiency, and organic cells employing low band gap "non-fullerene" electron acceptors can now deliver up to 18% efficiency. This implies that an opportunity exists to combine wide band gap perovskites, with narrow band gap organics, and deliver a very high efficiency light weigh thin-film perovskite-on-organic tandem technology. In this project, Nicky will be developing and investigating organic PV cells, which are matched for combining with perovskites in tandem devices. In the first instance he will investigate different charge extraction layers in OPV cells, and determine the impact of tuning the energy level alignment in such devices. He will progress to deliver improved efficiency and also integrate the devices into complete tandem cells. Brief description of the context of the research including potential impact;There is significant research efforts related to perovskite PV and organic PV, and this project will contribute to those overall fields of research. Oxford PV, a local company advancing new PV technology, is planning to launch its first manufactured product, perovskite-on-silicon tandem cells, mid next year. There is also significant academic and industrial effort on all perovskite thin-film technologies, and flexible organic PV technologies. This project here is working on what could be a future generation PV technology, combines aspects of organic and perovskite technologies, and could be transferable to industry on a 3 year time scale.Aims and objectives;To understand the impact of and develop new materials for improved stability and efficiency of organic PV cells, and the integration into perovskite-on-organic tandems.Novelty of the research methodology;We will be using a combination of thin-film deposition methodologies, including sputter coating, atomic layer deposition and thin-film thermal evaporation, employing the presently being installed EPSRC Advanced Functional Materials Cluster Deposition Facility. We will also employ Ultraviolet Photoelectron Spectroscopy, presently being ordered to combine with the cluster tool. Alignment to EPSRC's strategies and research areas:This project falls within the EPSRC's Physical Sciences growth area, Materials for Energy Applications, on "Synthesis, characterisation and theoretical understanding of functional materials to be used in energy applications," and, "includes fundamental studies into potential materials for photovoltaics (PV), and semiconductors." The Productive Outcome, will be the introduction of "the next generation of innovative and disruptive technology" for PV, with transformation "to a sustainable society," and increased National Resilience through "energy security". Solar Technologies is a maintain area, where the strategic focus of EPSRC is that "There will be greater focus on thin films and new materials (e.g. potentially game-changing perovskites)."