Efficient, flexible and mechanically robust perovskite solar cells on inverted nanocone plastic substrates

Nanoscale
Mohammad Mahdi TavakoliZhiyong Fan

Abstract

Utilization of nanostructures on photovoltaic devices can significantly improve the device energy conversion efficiency by enhancing the device light harvesting capability as well as carrier collection efficiency. However, improvements in device mechanical robustness and reliability, particularly for flexible devices, have rarely been reported with in-depth understanding. In this work, we fabricated efficient, flexible and mechanically robust organometallic perovskite solar cells on plastic substrates with inverted nanocone (i-cone) structures. Compared with the reference cell that was fabricated on a flat substrate, it was shown that the device power conversion efficiency could be improved by 37%, and reached up to 11.29% on i-cone substrates. More interestingly, it was discovered that the performance of an i-cone device remained more than 90% of the initial value even after 200 mechanical bending cycles, which is remarkably better than for the flat reference device, which degraded down to only 60% in the same test. Our experiments, coupled with mechanical simulation, demonstrated that a nanostructured template can greatly help in relaxing stress and strain upon device bending, which suppresses crack nucleation in different la...Continue Reading

References

Apr 16, 2009·Journal of the American Chemical Society·Akihiro KojimaTsutomu Miyasaka
May 2, 2012·Nano Letters·Sangmoo JeongYi Cui
Jun 6, 2012·Nano Letters·Siu-Fung LeungZhiyong Fan
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Apr 24, 2014·Advanced Materials·Christian WehrenfennigLaura M Herz

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Citations

Jan 25, 2018·Advanced Materials·Mohammad Mahdi TavakoliZhiyong Fan
Oct 18, 2018·Angewandte Chemie·Dong YangShengzhong Frank Liu
Apr 1, 2020·Optics Express·Ihteaz M HossainUlrich W Paetzold
Apr 30, 2020·Scientific Reports·O V OyeladeW O Soboyejo
Jan 23, 2021·Nanoscale·Alejandra Ruiz-ClavijoMarisol Martín-González
May 13, 2021·Chemical Society Reviews·Cong ChenHongwei Song
Sep 9, 2021·Chemical Society Reviews·Sebastiano BellaniFrancesco Bonaccorso

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