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ossila材料BrMeOPh-4PACz

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产品名称: ossila材料BrMeOPh-4PACz
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产品展商: Ossila
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 MSDS BrMeOPh-4PACz

简单介绍


ossila材料BrMeOPh-4PACz  的详细介绍

BrMeOPh-4PACz is a self-assembled monolayer material developed as a hole selection layer interface for highly efficient and stable perovskite solar cells. This molecule features an unsymmetric structure with a 3-bromo-6-(4-methoxyphenyl)-9H-carbazolyl terminal, a phosphonic acid anchor and butyl linker. The asymmetric large dipole (4.72 D) in BrMeOPh-4PACz, established by the electron-accepting bromine and electron-donating methoxyphenyl, reorientates the carbazole terminal and strengthens the short-range Coulomb interactions. This results in a more densely packed self-assembled monolayer film with a uniform coverage of self-assembled molecules for efficient charge transport. In addition, the introduction of the bromine on one side of the carbazole terminal reduces the valence band offset while maintains the wettability by keeping a methoxyphenyl group on the other side.

The donor–acceptor interface imposed by the bromine and methoxyphenyl substituents promotes ultrafast energy transfer to improve thermal carrier extraction and minimize energy loss, resulting in good photostability. With the lattice-matching N-hydroxyethyl phthalimide (PIE) molecules to release the compressive stress and stabilize the buried interface, BrMeOPh-4PACz-PIE based perovskite device demonstrates a power conversion efficiency of 27.28% (certified: 27.19%) and retains over 95% of the initial efficiency after 1,500 hours of illumination under 1-sun light-soaking.

Serving as a hole selective contact for organic solar cells and perovskite solar cells, BrMeOPh-4PACz is an alternative to PEDOT:PSS with superior performance and the convenience of solution deposition at low concentration, i.e. 1 mM.

General Information

CAS Number 3053380-37-0
Chemical Formula C23H23BrNO4P
Molecular Weight 488.32 g/mol
Absorption* λmax 288 nm (in film)
Fluorescence λem (n.a.)
HOMO/LUMO HOMO = -5.23 eV, LUMO = -0.99 eV (DFT)
Synonyms BrAs, (4-(3-bromo-6-(4-methoxyphenyl)-9H-carbazol-9-yl)butyl)phosphonic acid
Classification or Family Carbazole derivatives, Self-assembly monolayers, Hole transport layer, Hole selection layer, p-i-n Perovskite solar cells

Product Details

Purity > 98% (HPLC)
Melting Point N/A
Appearance Off-white powder

Solution Processing Procedure

Typical processing solvents: Methanol, ethanol
Typical suggested concentration: 1.0 mg/ml or 1.0 mM
Typical processing procedure: BrMeOPh-4PACz solution (1.0 mM) in methanol is spin-coated onto a clean and  ultraviolet-treated FTO substrate surface for 30 s at the speed of 2000 rpm, followed by annealing for 10 min at 100 ℃. PIE solution in IPA is spin-coated for 30 s at 5000 rpm then annealed for10 min at 100 ℃ (from perovskite films and solar cell fabrication, DOI: 10.1038/s41566-025-01827-6).

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