Tunable photoresponse in twisted lead iodide homostructures via exciton-phonon coupling

Manipulating the Self‐Trapped Excitons in the Lead Iodide/Hexagonal Boron Nitride van der Waals Heterostructures

“…It further suggests that the X STE peak is attributed to the STE emissions. [21] These results strongly support that room temperature stable STE emissions are realized in PbI 2 /hBN heterostructures due to the dielectric screening effect.…”

Self-trapped excitons in soft semiconductors

“…Recently, some achievements in the interlayer coupling and twisted angles triggered strong EPC in van der Waals structures have been reported. 78,224,225 In the van der Waals structures, the twisted angle degree of freedom may permit the manifestation of some unique performance. The STEs in the soft lattice crystal assembled twisted van der Waals structure may enable more promising properties.…”

Determining the twist angle of stacked MoS2layers using machine learning‐assisted low‐frequency interlayer Raman fingerprints

“…Moreover, stacking these 2D materials in different configurations-vertically or horizontally-leads to the formation of various homostructures and heterostructures with tunable electronic, optical, and magnetic properties. [9][10][11][12][13] Among the 2D materials, MoS 2 is one of the most widely studied semiconductors that shows promising potential in electronic and optoelectronic devices. 14,15 Generally, the number of layers, the stacking order and stacking twist angle in 2D layers are critical factors in affecting the band structure 16 and the behavior of quasiparticles such as excitons [17][18][19] and some novel mesophysical properties such as magnetism.…”

“…Many more two‐dimensional (2D) materials are continuing emerging with a rainbow of intriguing physical properties including excellent photoluminescence (PL) emission 1 (e.g., MoS 2 and MoSe 2 ), superconductivity 2,3 (e.g., NbS 2 and TaS 2 ), magnetism 4–6 (e.g., CrI 3 and NiPS 3 ), and ferroelectricity 7,8 (e.g., CuIn 2 PS 6 ). Moreover, stacking these 2D materials in different configurations—vertically or horizontally—leads to the formation of various homostructures and heterostructures with tunable electronic, optical, and magnetic properties 9–13 …”