A series of porphyrins as interfacial materials for inverted perovskite solar cells

Porphyrin Functionalization of CsPbBrI2/SiO2 Core–Shell Nanocrystals Enhances the Stability and Efficiency in Electroluminescent Devices

“…The semiconducting character and interaction as an intermediate layer in perovskite devices predestine this porphyrin as a promising class of surface ligand and was subsequently used to functionalize the SiO x ‐coated nanocrystal. [ 9,10 ] After functionalization with the organic semiconductor, no apparent changes in morphology could be observed as the particles maintained their cubic shape and size ( Figure b), indicating that the ligand preserves the structural integrity. These NCs will be referred to as “CsPbBrI 2 @SiO x @mMTPP” from here on.…”

“…Porphyrins have already shown improved efficiency in perovskite‐based light harvesting devices as an intermediate layer, which makes them a suitable candidate for functionalized hybrid materials. [ 9,10 ] Here, we investigate how this surface ligand affects key parameters of CsPbBrI 2 NC‐based LEDs, namely, the current efficacy and turn‐on voltage. To this end, we demonstrate how exchange with this porphyrin surface ligand becomes possible without deteriorating the perovskite nanocrystal by stabilizing the surface with a thin silica shell prior to ligand exchange.…”

Thermally StableD2hSymmetric Donor‐π‐Donor Porphyrins as Hole‐Transporting Materials for Perovskite Solar Cells

“…also demonstrated that PSCs with a mixture of Co II and Co III ‐based porphyrins as HTM could achieve an efficiency of 20.5 % with improved thermal stability [37] . Recent advances in HTMs based on porphyrin in high‐performance PSCs are summarized in Table S1 [38–47] …”

“…[37] Recent advances in HTMs based on porphyrin in high-performance PSCs are summarized in Table S1. [38][39][40][41][42][43][44][45][46][47] Redox-active functional groups such as diarylamines (DAA), [48,49] triarylamines (TAA), [50,51] phenothiazines, [43,47] and carbazoles. [52,53] have been widely used in synthesizing HTMs and sensitizers.…”

The Influence of Helium Dielectric Barrier Discharge Jet (DBDjet) Plasma Treatment on Bathocuproine (BCP) in p-i-n-Structure Perovskite Solar Cells

“…For instance, Seo et al, optimized the [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) thickness through the insertion of a LiF layer in PSCs and fabricated a device with a PCE exceeding 14%. Qiu et al also found that the PSC with a PCBM/ZnO bilayer stored in air for a short duration exhibited a better device performance [12][13][14][15][16][17][18][19][20][21][22]. Chen et al noted that a BCP buffer layer reduces charge accumulation and recombination at the ETL/metal electrode interface; furthermore, they found that a BCP buffer layer of suitable thickness not only results in excellent photovoltaic (PV) performance, but also provides an encapsulation effect that enhances the device stability [23].…”