2021年12月1日 · An environmentally friendly and lead-free perovskite CsBiBr 3 was co-doped by Ni and Mn and characterized systematically. Under IR light irradiation, 1c exhibits excellent photocatalytic properties and 24 h-recycles of repeated H 2 evolution. This pioneering example offers a nanoplatform for tunable perovskite CsBiBr 3 nanomaterials.

2023年10月16日 · X-ray photoelectron spectrophotometry (XPS) was performed by using a Thermo Fisher K-Alpha+ with a monochromated Al Kα X-ray source to understand the elemental composition of the samples. In the same XPS machine, valence-band XPS and work function (⌀) measurements were carried out using gold as a reference.

2024年5月1日 · In-situ XPS characterization confirms the S-scheme charge transfer mode. Cs 3 Bi 2 Br 9 /BiOBr has strong redox abilities and high charge separation efficiency. Cs 3 Bi 2 Br 9 /BiOBr can selectively photo-oxidize benzylic C‒H bonds.

2024年10月14日 · Bright and fast scintillators are highly crucial for high-speed X-ray imaging in the medical diagnostic radiology including angiography and cardiac computed tomography. The CsPbBr 3 nanocrystal...

X-ray photoelectron spectroscopy (XPS) was performed to investigate the chemical structure and valence state of both materials. The signals of Cs 3d (Fig. 2C) ... ... particle size of about 500...

2021年6月30日 · All-inorganic perovskites have been intensively investigated as potential optoelectronic materials because of their excellent thermal stability, especially for CsPbI 2 Br. Herein, the authors studied the effects of mixed passivation utilizing organic phenylethylammonium bromide and inorganic ionic cesium bromide (PEABr + …

2024年5月11日 · Here, we demonstrate how the crystal integrity and structural rigidity of quantum-confined color-saturated blue-emitting CsPbBr 3 nanoplatelets (NPLs) can be significantly enhanced via realization...

通过in-situ XPS比较异质结在光照前后的结果，可以发现CABB/SFNO异质结中Fe（SFNO导带主要构成元素）的结合能增大而Bi（CABB导带主要构成元素）上的结合能减小，证实了在光照下SFNO端发生空穴积累而CABB端发生电子富集，这符合Z-Scheme型异质结的特征。

2020年7月16日 · We have successfully substituted trivalent Bi 3+ with divalent Pb 2+ in Cs 3 Bi 2 Br 9 -layered perovskites. Controlled heterovalent Pb substitution in these Cs 3 Bi 2 Br 9 -layered perovskites reduces the band gap because of the emergence …

Lead-free halides with perovskite-related structures, such as the vacancy-ordered perovskite Cs 3 Bi 2 Br 9, are of interest for photovoltaic and optoelectronic applications.