Designing nanobowl arrays of mesoporous TiO₂ as an alternative electron transporting layer for carbon cathode-based perovskite solar cells

Nanoscale
Xiaoli ZhengShihe Yang

Abstract

In this work, we have designed a mesoporous TiO2 nanobowl (NB) array with pore size, bowl size and film thickness being easily controllable by the sol-gel process and the polystyrene (PS) template diameter. Based on the TiO2 NB array, we fabricated carbon cathode based perovskite solar cells (C-PSCs) to investigate the impact of TiO2 NB nanostructures on the performance of the as-obtained C-PSCs devices. As expected, the TiO2 NB based devices show a higher power conversion efficiency (PCE) than that of the planar counterpart, mainly due to the enhanced light absorption arising from the NB-assisted light management, the improved pore-filling of high quality perovskite crystals and the increased interface contact for rapid electron extraction and fast charge transport. Leveraging these advantages of the novel TiO2 NB film, the 220 nm-PS templated TiO2 NB based devices performed the best on both light absorption capability and charge extraction, and achieved a PCE up to 12.02% with good stability, which is 37% higher than that of the planar counterpart. These results point to a viable and convenient route toward the fabrication of TiO2 ETL nanostructures for high performance PSCs.

References

Apr 19, 2005·Chemical Communications : Chem Comm·Sarmimala HoreRainer Kern
Apr 16, 2009·Journal of the American Chemical Society·Akihiro KojimaTsutomu Miyasaka
Oct 10, 2012·Journal of the American Chemical Society·Lioz EtgarMichael Grätzel
Jan 9, 2014·Nano Letters·Victoria Gonzalez-PedroJuan Bisquert
Apr 17, 2014·Physical Chemistry Chemical Physics : PCCP·Sigalit AharonLioz Etgar
Apr 24, 2014·Scientific Reports·Kuo-Chin WangTen-Chin Wen
Jul 24, 2014·ACS Applied Materials & Interfaces·Cheng ChengAndrew A R Watt
Nov 20, 2014·Advanced Materials·Jing-De ChenJian-Xin Tang
Jan 17, 2015·Journal of the American Chemical Society·Linfeng LiuHongwei Han
Jul 4, 2015·Nature Nanotechnology·Karl Leo
Aug 12, 2015·The Journal of Physical Chemistry Letters·Kai WangTingli Ma
Aug 12, 2015·The Journal of Physical Chemistry Letters·Philipp LöperChristophe Ballif
Aug 12, 2015·The Journal of Physical Chemistry Letters·Andrea ListortiIvan Mora-Sero
Apr 17, 2014·The Journal of Physical Chemistry Letters·Siu-Fung LeungZhiyong Fan
May 1, 2014·The Journal of Physical Chemistry Letters·Henry J SnaithWei Zhang
Apr 3, 2014·The Journal of Physical Chemistry Letters·Tomas LeijtensHenry J Snaith

❮ Previous
Next ❯

Citations

Dec 30, 2016·ACS Applied Materials & Interfaces·Shan CongGuifu Zou
Aug 2, 2019·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Jianhang Qiu, Shihe Yang
Oct 27, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Tomokazu Umeyama, Hiroshi Imahori
Jan 1, 2019·Critical Reviews in Analytical Chemistry·Ping RongQi Yu
Apr 1, 2020·Optics Express·Ihteaz M HossainUlrich W Paetzold
May 13, 2021·Chemical Society Reviews·Cong ChenHongwei Song
Nov 6, 2018·Chemical Reviews·Wiley A Dunlap-ShohlDavid B Mitzi
Dec 15, 2016·ACS Applied Materials & Interfaces·Xiaowen ChangHaining Chen

❮ Previous
Next ❯

Related Concepts

Related Feeds

Adult Stem Cells

Adult stem cells reside in unique niches that provide vital cues for their survival, self-renewal, and differentiation. They hold great promise for use in tissue repair and regeneration as a novel therapeutic strategies. Here is the latest research.