Preparing Ambient-Processed Perovskite Solar Cells with Better Electronic Properties via Preheating Assisted One-Step Deposition Method

Abstract

Although the power conversion efficiency (PCE) of perovskite solar cells (PSCs) increases rapidly, there are still some issues that limit their commercialization. The perovskite is sensitive to the water molecules, increasing the difficulty in the preparation of perovskite films in ambient condition. Most high-performance PSCs based on conventional method are required to be prepared in inert atmosphere condition, which increase the fabrication cost. To fabricate the high-quality perovskite in ambient condition, we preheated the substrates and selected the proper anti-solvent. As a result, the target perovskite films show a better crystallinity compared with perovskite film prepared via the conventional one-step deposition method in ambient condition. The PSCs prepared in ambient condition yield the improved PCE of 16.89% from a PCE of 11.59%. Compared with the reference devices, the performance stability of target PSCs is much better than that of reference PSCs.

Recent Development and Directions in Printed Perovskite Solar Cells

“…The highest efficiency of PSC, which has been produced in the laboratory using the spin coating is 25.6%. [40] These are smallarea PSCs with better stability. [41] For the continuous mass production of large-scale and efficient PSCs, however, the scalable deposition technology must be developed.…”

Additive-regulated one-step dynamic spin-coating for fabricating high-performance perovskite solar cells under high humidity conditions

“…20 This preheating strategy has later been used by other researchers. 21 Using ethyl acetate as the antisolvent, Watson prepared 15% PSCs fabricated from a 75% RH condition. 22 The ethyl acetate antisolvent reduced the humidity during the spin coating process.…”