Abstract
The past decade has witnessed an emerging and fast-growing field on mechanically soft systems, ranging from soft materials (e.g. hydrogels) to soft devices (e.g. flexible electronics), and to soft functional systems (e.g. soft robotics). It is envisioned that soft systems will continue to thrive in the coming decades in academia and industrial communities. The launch of Soft Science is to provide the first dedicated platform for publishing research findings and to share the knowledge among the communities.
Highlights
Organic-inorganic hybrid metal halide perovskite (OMHP) materials, as one of the most promising lightharvesting materials for photovoltaic devices, have been widely applied in perovskite solar cells (PSCs) by their virtues of outstanding optoelectronic properties and easy fabricating process[1,2,3]
The instabilities of OMHP caused by heat, oxygen, moisture, or mechanical stress tremendously hinder the commercialization of PSCs[8,9,10]
PI at lower concentration (0.5 wt%) gives a relatively flat and continuous morphology, which was confirmed by the atomic force microscope (AFM), as illustrated in Supplementary Figure 1
Summary
Organic-inorganic hybrid metal halide perovskite (OMHP) materials, as one of the most promising lightharvesting materials for photovoltaic devices, have been widely applied in perovskite solar cells (PSCs) by their virtues of outstanding optoelectronic properties and easy fabricating process[1,2,3]. Due to the high hydrophobicity of PI, the contact angle of perovskite was sharply increased from 56.9° (pristine) to 95.3° (PI layer at the concentration of 2 wt%) upon the insertion of PI interfaces, providing the possibility of efficient inhibiting of moisture degradation[23].
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