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Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer-Free Perovskite Solar Cells

机译：简单，坚固且高效：无电子传输层的钙钛矿太阳能电池的最新进展

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摘要

Perovskite solar cells (PSCs) have shown great potential for photovoltaic applications with their unprecedented power conversion efficiency advancement. Such devices generally have a complex structure design with high temperature processed TiO2 as the electron transport layer (ETL). Further careful design of device configuration to fully tap the potentials of perovskite materials is expected. Particularly, for the practical application of PSCs, it is crucial to simplify their device structures thus the associated manufacturing process and cost while maintaining their efficiency to be comparable with the conventional devices. But how simple is simple? ETL-free PSCs promise the simplest structured, thus simple manufacturing processes and low cost large area PSCs in practical applications. They can also help the further exploration of the great potential of perovskite materials and understanding the working principle of PSCs. Within this review, the evolution of the PSC is outlined by discussing the recent advances in the simplification of device configuration and processes for cost effective, highly efficient, and robust PSCs, with a focus on ETL-free PSCs. Their advancement, key issues, working mechanism, existing problems, and future performance enhancements. This review aims to promote the future development of low cost and robust ETL-free PSCs toward more efficient power output.
机译：钙钛矿太阳能电池（PSC）凭借其空前的功率转换效率提高，已显示出在光伏应用中的巨大潜力。这样的器件通常具有复杂的结构设计，其中高温加工的TiO2作为电子传输层（ETL）。期望对器件配置进行更仔细的设计，以充分挖掘钙钛矿材料的潜力。特别地，对于PSC的实际应用，至关重要的是简化它们的器件结构，从而简化相关的制造工艺和成本，同时保持其效率与常规器件相当。但是简单有多简单？不含ETL的PSC保证了最简单的结构化，因而简单的制造工艺以及实际应用中的低成本大面积PSC。它们还可以帮助进一步探索钙钛矿材料的巨大潜力，并了解PSC的工作原理。在本次审查中，通过讨论简化设备配置和过程的最新进展来概述PSC的发展，以简化具有成本效益，高效且健壮的PSC，重点是无ETL的PSC。他们的进步，关键问题，工作机制，存在的问题以及未来的性能增强。这篇综述旨在促进低成本，强大的无ETL的PSC的未来发展，以实现更高的功率输出。

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