Elegant Face-Down Liquid-Space-Restricted Deposition of CsPbBr3 Films for Efficient Carbon-Based All-Inorganic Planar Perovskite Solar Cells

ACS Applied Materials & Interfaces
Pengpeng TengTao Yu

Abstract

It is a great challenge to obtain the uniform films of bromide-rich perovskites such as CsPbBr3 in the two-step sequential solution process (two-step method), which was mainly due to the decomposition of the precursor films in solution. Herein, we demonstrated a novel and elegant face-down liquid-space-restricted deposition to inhibit the decomposition and fabricate high-quality CsPbBr3 perovskite films. This method is highly reproducible, and the surface of the films was smooth and uniform with an average grain size of 860 nm. As a consequence, the planar perovskite solar cells (PSCs) without the hole-transport layer based on CsPbBr3 and carbon electrodes exhibit enhanced power conversion efficiency (PCE) along with high open circuit voltage ( VOC). The champion device has achieved a PCE of 5.86% with a VOC of 1.34 V, which to our knowledge is the highest performing CsPbBr3 PSC in planar structure. Our results suggest an efficient and low-cost route to fabricate the high-quality planar all-inorganic PSCs.

References

Apr 16, 2009·Journal of the American Chemical Society·Akihiro KojimaTsutomu Miyasaka
Nov 2, 2014·Small·Hyun Suk Jung, Nam-Gyu Park
May 8, 2015·Nature Nanotechnology·Samuel D Stranks, Henry J Snaith
Aug 13, 2015·The Journal of Physical Chemistry Letters·Michael KulbakGary Hodes
Dec 25, 2015·The Journal of Physical Chemistry Letters·Michael KulbakDavid Cahen
Feb 9, 2016·Nature Communications·Simone MeloniMichael Graetzel
Feb 11, 2016·The Journal of Physical Chemistry Letters·Rachel E BealMichael D McGehee
Apr 12, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Weidong ZhuZhigang Zou
Dec 15, 2016·Journal of the American Chemical Society·Jia LiangJie Liu
Dec 15, 2016·ACS Applied Materials & Interfaces·Xiaowen ChangHaining Chen
Apr 14, 2017·Nature·Yang Yang, Jingbi You
Apr 22, 2017·Chemical Communications : Chem Comm·Yangrunqian WangZhigang Zou
Sep 22, 2017·Journal of the American Chemical Society·Jia LiangZhong Jin

❮ 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.