287 citations · 798 across the 15 of their papers we have counts for
15 papers
Vibrational properties differ between halide and chalcogenide perovskite semiconductors, and it matters for optoelectronic performance
K. Ye, M. Menahem, T. Salzillo +7
We report a comparative study of temperature-dependent photoluminescence and structural dynamics of two perovskite semiconductors, the chalcogenide BaZrS (BZS) and the halide C…
Giant Modulation of Refractive Index from Picoscale Atomic Displacements
Boyang Zhao, Guodong Ren, Hongyan Mei +21
Structural disorder has been shown to enhance and modulate magnetic, electrical, dipolar, electrochemical, and mechanical properties of materials. However, the possibility of obtai…
Colossal optical anisotropy from atomic-scale modulations
Hongyan Mei, Guodong Ren, Boyang Zhao +17
In modern optics, materials with large birefringence (Δn, where n is the refractive index) are sought after for polarization control (e.g. in wave plates, polarizing beam splitters…
Unconventional Charge-density-wave Order in a Dilute d-band Semiconductor
Huandong Chen, Batyr Ilyas, Boyang Zhao +27
Electron-lattice coupling effects in low dimensional materials give rise to charge density wave (CDW) order and phase transitions. These phenomena are critical ingredients for supe…
Orientation Controlled Anisotropy in Single Crystals of Quasi-1D BaTiS3
Boyang Zhao, Md Shafkat Bin Hoque, Gwan Yeong Jung +17
Low-dimensional materials with chain-like (one-dimensional) or layered (twodimensional) structures are of significant interest due to their anisotropic electrical, optical, thermal…
Cesium-involved electron transfer and electron-electron interaction in high-pressure metallic CsPbI3
Feng Ke, Jiejuan Yan, Shanyuan Niu +8
Electron-phonon coupling was believed to govern the carrier transport in halide perovskites and related phases. Here we demonstrate that electron-electron interaction plays a direc…
Discovery of highly-polarizable semiconductors BaZrS3 and Ba3Zr2S7
Stephen Filippone, Boyang Zhao, Shanyuan Niu +6
There are few known semiconductors exhibiting both strong optical response and large dielectric polarizability. Inorganic materials with large dielectric polarizability tend to be…
Linear Dichroism Conversion in Quasi One-Dimensional Perovskite Chalcogenide
Jiangbin Wu, Xin Cong, Shanyuan Niu +6
Anisotropic photonic materials with linear dichroism are crucial components in many sensing, imaging and communication applications. Such materials play an important role as polari…
Band gap evolution in Ruddlesden-Popper phases
Wei Li, Shanyuan Niu, Boyang Zhao +3
We investigate the variation of the band gap across the Ruddlesden-Popper (RP) series (An+1BnX3n+1) in model chalcogenide, oxide, and halide materials to understand the factors inf…
Crystal growth and structural analysis of perovskite chalcogenide BaZrS and Ruddlesden-Popper phase BaZrS
Shanyuan Niu, Boyang Zhao, Kevin Ye +7
Perovskite chalcogenides are gaining substantial interest as an emerging class of semiconductors for optoelectronic applications. High quality samples are of vital importance to ex…
Epitaxial Growth and Electrical Properties of VO2 on LSAT (111) substrate
Yang Liu, Shanyuan Niu, Thomas Orvis +3
We report the epitaxial growth and the electrical properties, especially the metal-to-insulator transition (MIT), of vanadium dioxide (VO2) thin films synthesized on LSAT (111) ([L…
Thermal Stability Study of Transition Metal Perovskite Sulfides
Shanyuan Niu, JoAnna Milam-Guerrero, Yucheng Zhou +4
Transition metal perovskite chalcogenides, a class of materials with rich tunability in functionalities, are gaining increased attention as candidate materials for renewable energy…
Mid-wave and Long-wave IR Linear Dichroism in a Hexagonal Perovskite Chalcogenide
Shanyuan Niu, Huan Zhao, Yucheng Zhou +6
Mid-wave infrared (IR) and long-wave IR spectral ranges are of growing interest in various applications such as thermal imaging, thermography-based remote sensing, and night vision…
Ideal Bandgap in a 2D Ruddlesden-Popper Perovskite Chalcogenide for Single-junction Solar Cells
Shanyuan Niu, Debarghya Sarkar, Kristopher Williams +12
Transition metal perovskite chalcogenides (TMPCs) are explored as stable, environmentally friendly semiconductors for solar energy conversion. They can be viewed as the inorganic a…
Band-Gap Control via Structural and Chemical Tuning of Transition Metal Perovskite Chalcogenides
Shanyuan Niu, Huaixun Huyan, Yang Liu +8
Transition metal perovskite chalcogenides (TMPC) are a new class of semiconductor materials with broad tunability of physical properties due to their chemical and structural flexib…