List of reviewers who served JPE in 2019.

The study of magnetophotonic crystals is usually based on its reflection and transmission of light waves, but its absorption properties are rarely studied. Considering the current high absorptivity of one-way absorbers has one absorption peak, and the optical constants of magnetophotonic crystals are all ideal approximation, we introduce the practical optical constants of silicon carbide (SiC) into the magnetophotonic crystals model. The optical properties are investigated in visible wavelength based on the transformation matrix method, and some parameter effects are also discussed in detail, such as the incidence angle and the thickness of defect layer. The one-dimensional (1-D) magnetophotonic crystal structure was systematically optimized. Then a multipeak one-way light absorber composed of real semiconductor and metal based on 1-D magnetophotonic crystal is further proposed, which makes the channel position of perfect nonreciprocal absorption controllable and the number increased; the influence of incident conditions on the absorption efficiency is greatly weakened and the universality and flexibility of one-way absorber in practice are greatly enhanced. The achievement provides new ideas for the study of nonreciprocal absorbers.

The results of a study of the influence of the system dimension on the generation and charge carrier transfer in copper phthalocyanine (CuPc) nanostructures are presented. It is shown that the observed broadening of the B and Q bands and the bathochromic shift of the maxima in the absorption spectra are due to the formation of the η-CuPc, α-CuPc, and β-CuPc phases in the CuPc nanostructures. The observed increase in short-circuit current and negative magnetic effect in CuPc nanostructures is associated with size effects.

A low-temperature solution process technique is employed to develop an inorganic cesium carbonate (Cs2CO3) as an electron transport material for inorganic–organic hybrid double cation (FAPbI3)0.85(MAPbBr3)0.15 perovskite solar cells, as an alternative to the conventional thick and meso-TiO2. A device structure of compact-TiO2/Cs2CO3 (0.2 wt. %)/perovskite/spiro-OMETAD leads to enhanced performance of the photovoltaic device, achieving a short-circuit current density (Jsc) of 22.26  mA/cm2, an open-circuit voltage (Voc) of 1054 mV, a fill factor (FF) of 71.6%, and a power conversion efficiency (PCE) of about 17% under one sun illumination, whereas the controlled device structure shows an efficiency of 16.58% without such surface modification layer. Additionally, a device structure of Cs2CO3 (6 wt. %)/perovskite/spiro-OMETAD without any