Investigation of structural and optical properties of MAPbBr₃monocrystals under fast electron irradiation

Abstract

Halide perovskites have demonstrated great potential for photovoltaics and detector applications, due to the strong absorption, large mobility lifetime product, structural defect tolerance, and wide range of chemical compositions with...

A Universal Fabrication Strategy for High‐Resolution Perovskite‐Based Photodetector Arrays

“…The transmission and absorption spectrum of the bottom electrodes, HTL and perovskite films array are summarized in Figure 2h,i and Figure S2f (Supporting Information), respectively. The MAPbI 3 film exhibits a wide absorption range in the visible wavelength band, [23] while the absorbance of MAPbBr 3 film demonstrates a sharp drop at the wavelength of 520 nm, [24] which are consistent with previous reports. [25] The above results confirm that the MAPbI 3 and MAPbBr 3 films array are readily for the fabrication of highresolution devices.…”

Blocking wide bandgap mixed halide perovskites’ decomposition through polymer inclusion

“…Using the rate constants reported from ref. 40 and representative optical parameters at 532 nm of A. Ishteev et al , 42 we numerically solved the rate equation with a cw power of 0.1 W over a spot diameter of 5 mm obtaining a steady-state carrier density of 1 × 10 14 cm −3 . Given a mobility of 37 cm 2 V −1 s −1 , 38 this carrier density corresponds approximately to a DC conductivity of 8 × 10 −4 S cm −1 .…”

Modelling of Kelvin probe surface voltage and photovoltage in dielectric-semiconductor interfaces

“…The technique can be also used to measure the surface potentials of dielectrics thin films deposited on top of semiconductors, with the measured contact potential difference (CPD) being strongly dependent on the presence of charge in andon the dielectrics [5]. Thanks to these capabilities the KP method [6] has become more widespread in the photovoltaics (PV) and optoelectronics field, including the large community studying perovskite solar cells [7,8], as well as groups working on silicon devices [9][10][11][12][13][14][15], and other thin film technologies [16,17]. The working principles of KP have long been reported and used in commercial instruments.…”