Hua Dong, Zhaoxin Wu, Jun Xi, Xiaobao Xu et al.
Abstract High crystallinity and compactness of the active layer is essential for metal‐halide perovskite solar cells. Here, a simple pseudohalide‐induced film retreatment technology is developed as the passivation for preformed perovskite film. It is found that the retreatment process yields a contr...
Jingda Zhao, Xin Wang, Yuwei Li, Qi Cheng et al.
Abstract Substance discrimination beyond the shape feature is urgently desired for x‐ray imaging for enhancing target identification. With two x‐ray sources or stacked two detectors, the two‐energy‐channel x‐ray detection can discriminate substance density by normalizing the target thickness. Nevert...
Junyu Li, Songwei Zhang, Mohd Nazim Mohtar, Nattha Jindapetch et al.
Abstract Halide perovskites have attracted great interest as active layers in optoelectronic devices. Among perovskites with diverse compositions, α-FAPbI 3 is of utmost importance with great optoelectronic properties and a decent bandgap of 1.48 eV. However, the α-phase suffers an irreversible tran...
Hua Dong, Zhaoxin Wu, Jun Xi, Xiaobao Xu et al.
A low-temperature pseudohalide-induced post-processing technology is developed to improve the crystallinity and compactness of the perovskite active layer. In article number 1704836, Zhaoxin Wu, Alex K.-Y. Jen, and co-workers report that the retreatment process yields a controllable decompostion-to-...
Jingda Zhao, Shilin Liu, Yuwei Li, Xin Wang et al.
Dual-energy X-ray imaging is of significant interest for medical diagnostics, security screening, and industrial inspection; however, existing approaches based on photon-counting or multilayer detectors often increase the system complexity. Here, we introduce a surface-treated perovskite thin-crysta...
Tianqi Yu, Dong Wang, Min Liu, Wei Lei et al.