All-inorganic inverse perovskite solar cells using zinc oxide nanocolloids on spin coated perovskite layer

Abstract

We confirmed the influence of ZnO nanoparticle size and residual water on performance of all inorganic perovskite solar cells. By decreasing the size of the ZnO nanoparticles, the short-circuit current density (Jsc) and open circuit photovoltage (Voc) values are increased and the conversion efficiency is improved. Although the Voc value is not affected by the influence of residual water in the solution for preparing the ZnO layer, the Jsc value drops greatly. As a result, it was found that it is important to use the oxide nanoparticles with a small particle diameter and to reduce the water content in the oxide forming material in order to manufacture a highly efficient all inorganic perovskite solar cells.

Temperature-Dependent Optical Band Gap in CsPbBr3, MAPbBr3, and FAPbBr3 Single Crystals

“…In addition to hybrid perovskites, recent developments push toward all-inorganic or Cs-containing materials. 10 − 12 …”

“…Adding bromides increases the band gap compared to corresponding pure iodides, and this favors tandem coupling with silicon in combined photovoltaic technologies. , Their relatively wide band gap is likewise exploited for other optoelectronic applications (LEDs and lasers). In addition to hybrid perovskites, recent developments push toward all-inorganic or Cs-containing materials. − …”

Quasi-2D halide perovskites for resistive switching devices with ON/OFF ratios above 109

“…Photovoltaic devices are recognized as prospective energy sources [1][2][3][4][5][6][7][8] . As light absorbers, halide perovskites have had a significant impact on solar cell research owing to their remarkable photovoltaic properties, such as their long charge diffusion length and low exciton binding energies [9][10][11][12][13][14][15][16] .…”

Developing Conductive Highly Ordered Zinc Oxide Nanorods by Acetylacetonate-Assisted Growth

“…Zinc oxide (ZnO) is a versatile n-type semiconducting material owing to the direct bandgap (3.37 eV) with a large exciton binding energy (60 meV) at room temperature, bio-safe, functional biocompatible, and high isoelectric point (~9.5) [1,2]. Among all diverse morphologies of ZnO nanostructures such as nanosheets, nanoflakes, nanoplates, nanoflowers, and nanocombs [3][4][5][6][7][8][9][10], nanorods (NRs) have higher surface area and catalytic properties, and for that reason, they can be utilized in many potential applications such as sensors, field-effect transistors, piezoelectric generators, and biosensors [5,7,11,12]. Highly ordered ZnO NRs with excellent electrical conductivity give higher surface reaction activity for a bio-interfacing platform for immobilization, which could lead to greater signal transductions during the detection, hence, promise better sensing performance.…”