Research Update: Hybrid organic-inorganic perovskite (HOIP) thin films and solar cells by vapor phase reaction

Abstract

With the rapid progress in deposition techniques for hybrid organic-inorganic perovskite (HOIP) thin films, this new class of photovoltaic (PV) technology has achieved material quality and power conversion efficiency comparable to those established technologies. Among the various techniques for HOIP thin films preparation, vapor based deposition technique is considered as a promising alternative process to substitute solution spin-coating method for large-area or scale-up preparation. This technique provides some unique benefits for high-quality perovskite crystallization, which are discussed in this research update.

An Emerging Visible-Light Organic–Inorganic Hybrid Perovskite for Photocatalytic Applications

“…The conclusion obtained here agrees well with that reported by previous literature confirming the achievement of the synthesis processes [18,[63][64][65][66]. via transient photo-luminescence measurements [54,55]. A nearly instantaneous charge generation and dissociations of balanced free charge carriers with high mobility has been observed, and the charges were proved to remain in that state for up to tens of microseconds [56].…”

“…Hybrid organic-inorganic perovskite achieves an optical absorbance across the entire visible spectrum as highlighted by Dualeh [53]. Carrier diffusion lengths was found to reach up to 100 nm for both electrons and holes in MAIPb via transient photo-luminescence measurements [54,55]. A nearly instantaneous charge generation and dissociations of balanced free charge carriers with high mobility has been observed, and the charges were proved to remain in that state for up to tens of microseconds [56].…”

“…Figure 4E shows peak belongs to C1s around 285 eV. Shen et al [54], in their interesting research on hybrid organic-inorganic perovskite for solar cell application, assigned this peak to the methyl group. The conclusion obtained here agrees well with that reported by previous literature confirming the achievement of the synthesis processes [18,[63][64][65][66].…”

Recent Development of Organic-Inorganic Perovskite-Based Tandem Solar Cells

“…Currently, although orthogonal solvents are usually employed to solve this problem as mentioned before, the effect of the solvent is just alleviated but still inevitable. To fully address this problem, vacuum deposition may be a more direct way, which has proven its feasibility in single junction cells . Ideally, all functional layers including ETLs, HTLs and perovskite absorber layers could be layer‐by‐layer deposited onto the subcells, employing the vacuum deposition technology which also provides benefits in the large‐scale fabrication.…”

The Wettability and Numerical Model of Different Silicon Microstructural Surfaces

“…However, when cos 1 Y r θ > , the surfaces do not satisfy this rule in practical applications. The Cassie-Baxter theory [16] assumes that the solid-gas composite surface is in contact with the droplet on the rough surface; in other words, the groove under the droplet is filled with gas. The wetting model is shown in Figure 1c, such that Both the Wenzel and Cassie-Baxter theories indicate that the contact angle of the actual surface is determined by both the surface morphology and Young's contact angle.…”