Light Intensity Analysis of Photovoltaic Parameters for Perovskite Solar Cells.

The number of publications on perovskite solar cells (PSCs) continues to grow exponentially. Although the efficiency of PSCs has exceeded 25.5%, not every research laboratory can reproduce this result or even pass the border of 20%.

Effects of Bromine Doping on the Structural Properties and Band Gap of CHNHPb(I Br ) Perovskite.

An experimental and theoretical study is reported to investigate the influence of bromine doping on CHNHPb(I Br ) perovskite for Br compositions ranging from = 0 to = 0.1, in which the material remains in the tetragonal phase. The experimental band gap is deduced from UV-vis absorption spectroscopy and displays a linear behavior as a function of bromine concentration.

Influence of Orientational Disorder on the Optical Absorption Properties of the Hybrid Metal-Halide Perovskite CH NH PbI.

An experimental and theoretical investigation is reported to analyze the relation between the structural and absorption properties of CH NH PbI in the tetragonal phase. More than 3000 geometry optimizations were performed to reveal the structural disorder and identify structures with the lowest energies. The electronic structure calculations provide an averaged band gap of 1.

Perovskite Solar Cells: Toward Industrial-Scale Methods.

Research progress in hybrid perovskite solar cells has increased enormously over the last years, making perovskites very promising candidates for future PV technologies. Perovskite solar cells use abundant and low-cost starting materials, providing economic advantages for large-scale implementation. A transition from laboratory-scale fabrication to industrial manufacturing requires scaling up of the dimension of the devices; manufacturing of large-area modules, considering the development of interconnection as an important step toward upscaling; and development of deposition methods alternative to spin coating, which are industrially compatible and facilitate high power conversion efficiency of the manufactured devices.

Highly Efficient and Stable Flexible Perovskite Solar Cells with Metal Oxides Nanoparticle Charge Extraction Layers.

In this study, the fabrication of highly efficient and durable flexible inverted perovskite solar cells (PSCs) is reported. Presynthesized, solution-derived NiO and ZnO nanoparticles films are employed at room temperature as a hole transport layer (HTL) and electron transport layer (ETL), respectively. The triple cation perovskite films are produced in a single step and for the sake of comparison, ultrasmooth and pinhole-free absorbing layers are also fabricated using MAPbI perovskite.