Targeting the imperfections at the ZnO/CsPbI₂Br interface for low-temperature carbon-based perovskite solar cells

Abstract

Zinc oxide (ZnO) is an appealing electron transport layer for inorganic perovskite solar cells (IPSCs). However, the attempts to achieve high device performance have been undermined by the imperfections at...

Interfacial Treatment by 1,4-Phenyldiammonium Diiodide to Significantly Improve the Performance of Carbon-Based CsPbI2Br Solar Cells

“…The scanning electron microscope (SEM) characterization of the surface morphologies for the CsPbI 2 Br films without and with the PhDADI modification is shown in Figure a,b, respectively. It is evident that compared with the control sample with pinholes (see the white indication arrows), the PhDADI-modified CsPbI 2 Br film is more compact and free of pinholes, , which directly supports the above discussion for the enhanced light absorbance of the corresponding sample in Figure c. Moreover, as a distinct contrast from the SEM images, the grain size is evidently increased for the CsPbI 2 Br film with the statistical average value of 399 nm after the PhDADI modification, much larger than that of 263 nm for the control sample (see Figure S2 for the statistical distribution bar charts), consistent with the XRD characterization.…”

Defect-less formamidinium Sn–Pb perovskite grown on a fluorinated substrate with top-down crystallization control for efficient and stable photovoltaics

“…1a), indicating the strong electron interaction between NiO x and TFOA. 29,30 This interaction could effectively improve the surface chemical environment of NiO x films by reducing the undesired Ni 3+ content through TFOA passivation (Fig. S4, ESI†), which is favorable for the hole-acceptation capacity of NiO x HTL.…”

Facile Modification on Buried Interface for Highly Efficient and Stable FASn0.5Pb0.5I3 Perovskite Solar Cells with NiOx Hole‐Transport layers†

“…[ 1‐5 ] In the past decade, the power conversion efficiency (PCE) of single‐junction PSCs has rapidly developed from 3.8% to the certified 25.8% in 2023. [ 6‐15 ] These prominent achievements are usually made from lead‐based perovskites (PVKs). [ 16 ] However, their inevitable toxicity and environmental unfriendliness have triggered the exploration of lead‐free or lead‐less PSCs.…”