Flexible Perovskite Solar Cells with High Power-Per-Weight: Progress, Application, and Perspectives

Abstract

In our day-to-day lives, advances in lightweight and flexible photovoltaics will promote a new generation of soft electronics and machines requiring high power-per-weight. Ultrathin flexible perovskite solar cells (F-PSCs) with high power-per-weight have displayed a unique potential for specific applications where lower weight, higher flexibility, and conformability are indispensable. This Review highlights the recent progress and practical applications of ultrathin and lightweight F-PSCs and demonstrates the routes toward enhanced device efficiency and improved mechanical and environmental stability concerning the choice of flexible substrates and the development of high-performance functional layers and flexible transparent electrodes. The fabrication technologies for mass production of efficient F-PSCs at large scale are then summarized, including continuous roll-to-roll methods integrated with low-temperature process. Furthermore, the practical applications focused on self-powered wearable electronic devices, solar-powered miniature unmanned aerial vehicles, and even solar modules operating in near-space are elaborated. Finally, the current challenging issues and future perspective are discussed, aiming to promote more extensive applications and commercialization processes for lightweight F-PSCs.

Near 90% Transparent ITO‐Based Flexible Electrode with Double‐Sided Antireflection Layers for Highly Efficient Flexible Optoelectronic Devices

“…We choose PEN-ITO as our research electrode because PEN has a relatively higher thermal stability and photostability than other polymers. [18,32,33] A schematic diagram for the fabrication of the flexible transparent DARCs electrode was shown in Figure S1 (Supporting Information). The flexible electrode PEN-ITO was sandwiched between double-sided antireflection coatings, SiO 2 NPs on the PEN side and PMO composite film on ITO side.…”

Advances in Organic and Perovskite Photovoltaics Enabling a Greener Internet of Things

“…[47] The power-per-weight is defined by the ratio of the power output to device weight under standard solar radiation. [48] Song et al recently reported ultra-flexible (total thickness less than 3 µm) ternary OPVs with PCE of 15.5% and an outstanding powerper-weight of 32.07 W g −1 at a weight of 4.83 g m −2 . [26] Similar levels of power-per-weight have been reported for PSCs too, for instance Kang et al demonstrated ultra-flexible PSCs with powerper-weight of 29.4 W g −1 at a weight of 4.37 g m −2 and PCE of 12.85%.…”

Compact SnO2/Mesoporous TiO2 Bilayer Electron Transport Layer for Perovskite Solar Cells Fabricated at Low Process Temperature

“…Perovskite solar cells (PSCs) have received attention because their power conversion efficiency (PCE) has rapidly increased by over 25% [1,2]. Many researchers have tried to enhance the performance of PSCs and translate them from the laboratory to commercial products [3][4][5][6].…”