Advanced Electronic Materials
This study investigates the frequency response of perovskite photodetectors, focusing on MAPbI3 polycrystalline thin films. A conditioning circuit is designed to efficiently extract the magnitude and phase of the photocurrent (Iph), which can be modeled using two fractional poles positioned at low (10 kHz) and high (39–250 kHz) cut-off frequencies...
Very high in-plane magnetic field sensitivity approaching 100 % at 0.5 Tesla in ion-implanted lateral 4H SiC pin diodes is measured at room temperature. Using TCAD simulations the role of implant induced hole traps in confining carrier injection from the diode's anode into distinctive injection channels is unveiled. This injection confinement causes...
The enabling power of van der Waals imprinting is invoked to stabilize metastable group IV–VI compounds, as exemplified by the Black-phosphorene-like puckered GeTe on the (001) surface of the isostructural ground-state phase of SnSe. Remarkably, the as-grown IV–VI heterostructures harbor significantly enhanced spontaneous polarization and multistate...
The La-modified (Bi0.2Na0.2Ba0.2Sr0.2Ca0.2)TiO3 is a thermal and mechanical stabile high-entropy ceramic, which maintains excellent dielectric properties within 327–689 K (tan δ < 0.01) and up to 7 GPa. In addition, if further compressed, the material undergoes grain size refining at ≈8 GPa and grain rotation at ≈9 GPa, respectively. Abstract...
In this study, synaptic characteristics of ITO/ IZO/Al2O3/TaN device are emulated by light stimulations and electric pulses. Moreover, reservoir computing is implemented by optical stimulations for temporal learning. The insertion of a thin Al2O3 layer improves the resistive switching characteristics such as cycle-to-cycle and device-to-device uniformity...
The poor thermoelectric performance of MnTe alloys is decoupled through hole donor Ge-deficiency. Extra GeTe in the MnTe compound offers free charge carriers due to a narrow bandgap and resulting 91% enhancement in power factor. Moreover, inherited nano-precipitates and tweed microstructures reduce k l = 0.74 Wm−1K−1 leading to high ZT = 1.2...
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