A facile strategy to adjust SnO₂/perovskite interfacial properties for high-efficiency perovskite solar cells

Abstract

The interface between the electron transport layer (ETL) and the perovskite film plays a vital role for the performance of perovskite solar cells (PSCs). Here, (2-hydroxyethyl)amine hydroiodide (EOAI) is employed...

Grain Boundary and Buried Interface Suturing Enabled by Fullerene Derivatives for High-Performance Perovskite Solar Module

“…We further provide the core-level binding energy of the O 1s orbital to support the formation of the covalent bonds. The XPS peak at 530.33 eV corresponds to the Sn–O bond in SnO 2 , and the XPS peak at 531.36 eV corresponds to the O–H group on the surface of the SnO 2 film . The O 1s peak of the O–H group in FPAC 60 /SnO 2 films distinctly shifts by 0.76 eV (from 531.36 to 532.12 eV) compared with that of the same group in SnO 2 .…”

“…The XPS peak at 530.33 eV corresponds to the Sn−O bond in SnO 2 , and the XPS peak at 531.36 eV corresponds to the O−H group on the surface of the SnO 2 film. 19 The O 1s peak of the O−H group in FPAC 60 /SnO 2 films distinctly shifts by 0.76 eV (from 531.36 to 532.12 eV) compared with that of the same group in SnO 2 . Meanwhile, the ratio of O−H group peak to Sn−O peak is reduced from I O−H /I Sn−O = 0.685 (SnO 2 ) to 0.477 (SnO 2 /FPAC 60 ), indicating that the FPAC 60 treatment reduces the number of O−H groups, and thus a FPAC 60 -SnO 2 adduct was formed.…”

Trap engineering using oxygen-doped graphitic carbon nitride for high-performance perovskite solar cells

“…This optimized energy-level alignment enables the additive modification or interaction allows the photogenerated electrons to be extracted from the perovskite layer to the ETL with slighter energy loss, which would not only benefit the separation, transport, and collection of carriers, but also help to increase the open-circuit voltage of the device. 60…”

A thiourea resin polymer as a multifunctional modifier of the buried interface for efficient perovskite solar cells with reduced lead leakage

“…3a). 25 The increased electron density results in the reduction of binding energy of Pb 4f. As depicted in Fig.…”