Charged oxide inversion layer (COIL) solar cells

带电氧化物反转层 (COIL) 太阳能电池

基本信息

批准号：
EP/V038605/1
负责人：
Ruy Bonilla Osorio
金额：
$ 60.71万
依托单位：
University of Oxford
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FV038605%2F1
关键词：
Charged oxide inversion layer COIL

项目摘要

Photovoltaic (PV) solar cells now generate a significant proportion of the world's electricity and have vast potential for further growth. PV is enormously important to the UK with >13.5 GW now installed here, and growth worldwide is forecast to be over tenfold in the next three decades. More than 90% of solar cells are produced from crystalline silicon, and costs have fallen to levels not previously thought possible (< 2.34 US cents/kWh). Other technologies have yet to gain industrial traction and commercial barriers to entry are becoming substantial. Silicon-based solar technology is hence likely to remain dominant and critical to the expansion of renewable energy in the coming decades. Its continuous advancement is essential to accelerate uptake of and impact from green electricity generation worldwide and for fulfilling the UK's obligations under the Paris Agreement. The passivated emitter and rear cells (PERC) architecture is standard for today's silicon solar cells. The PERC technology will reach its practical limits in the next 10 years, with a top forecast commercial efficiency of ~24%. Overcoming this efficiency boundary requires cell architectures that circumvent the limitations of PERC. This project aims to develop a new cell technology to supersede PERC in which the drawbacks of high temperature processing are avoided, the efficiency potential of a single junction is fully exploited, and a route to implement tandem and bifacial architectures is directly possible. This programme brings together teams at the Universities of Oxford and Warwick with world-leading expertise in silicon surface passivation, carrier lifetime, and impurity management for the development of PV devices. The aim is to conduct fundamental work necessary to facilitate a step-reduction in the cost per Watt of PV electricity, thus producing a disruptive change in the advancement of this important renewable energy industry. This project will develop a charged oxide inversion layer (COIL) solar cell by integrating advanced nanoscale thin-film materials to augment the PV potential of a silicon absorber. This novel cell architecture has the potential to overtake the current standard PERC devices, while providing a direct route to use in emerging selective contact, tandem, and bifacial designs. So far, the efficiency of an inversion layer architecture has been exploited only to a limited extent, e.g. in a 18% cell. The potential of the COIL cell extends well beyond this mark, and as high as 28% in a single-junction configuration could be achieved. This project will deliver the fundamental understanding necessary to unlock this potential, exploit the inversion layer concept by engineering highly charged dielectric thin-films, and use these films to produce a prototype cell device.

现在，光伏（PV）太阳能电池可产生世界上的大部分电力，并具有巨大的进一步增长潜力。 PV对英国非常重要，目前已安装在这里的13.5 GW，并且在未来三十年中，全球增长将超过十倍。超过90％的太阳能电池是由结晶硅产生的，成本已降至以前不可能的水平（<2.34美国美分/千瓦时）。其他技术尚未获得工业牵引力，进入商业障碍正在变得越来越大。因此，总部位于硅的太阳能技术可能在未来几十年内对可再生能源的扩展保持占主导地位，并且至关重要。它的持续发展对于加速全球绿色发电的吸收和影响以及根据《巴黎协定》中英国的义务至关重要。钝化的发射极和后细胞（PERC）结构是当今硅太阳能电池的标准。 PERC技术将在未来10年内达到实际限制，最高预测的商业效率约为24％。克服该效率边界需要绕过PERC局限性的细胞体系结构。该项目旨在开发一种新的细胞技术来取代PERC，其中避免了高温处理的缺点，完全利用单个连接点的效率潜力，并且可以直接实现串联和双面体系结构的途径。该计划汇集了牛津大学和沃里克大学的团队，并在硅表面钝化，运营商寿命和杂质管理方面具有世界领先的专业知识，以开发PV设备。目的是进行必要的基本工作，以促进PV电力的每瓦成本逐步降低，从而在这一重要的可再生能源行业的进步中产生破坏性的变化。该项目将通过整合高级纳米级薄膜材料来增强硅吸收剂的PV电位，从而开发一个带电的氧化物反转层（线圈）太阳能电池。这种新颖的细胞体系结构有可能超过当前的标准PERC设备，同时提供新兴的选择性接触，串联和双面设计的直接途径。到目前为止，反转层体系结构的效率仅在有限的程度上被利用，例如在18％的细胞中。线圈电池的电势远远超出此标记，并且可以实现单个结构型的高达28％。该项目将提供必要的基本理解，以释放这种潜力，通过工程高电动的介电薄膜来利用反转层概念，并使用这些薄膜生成原型电池设备。