Cover Page February-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 2, Pages 98-106, February 2019
About Cover

The cover photo describing the crystal structure of Na5YSi4O12 with glass-ceramic Na+ superionic conductors. As discussed by Toshinori Okura, these glass-ceramic conductors have great potential and are one of the most important groups of solid electrolytes, not only because of its practical usefulness for advanced batteries but also for its three-dimensional ionic conducting nature.


Low temperature processed efficient and stable perovskite solar cell

Ashraf Uddin*, Md Arafat Mahmud, Naveen Kumar Elumalai, Mushfika Baishakhi Upama, Dian Wang, Faiazul Haque, Cheng Xu

School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia

Adv. Mater. Lett., 2019, 10 (2), pp 98-106

DOI: 10.5185/amlett.2019.2050

Publication Date (Web): Dec 19, 2018

E-mail: a.uddin@unsw.edu.au

Abstract

MA0.6FA0.4PbI3 material based efficient and stable perovskite solar cells (PSCs) are fabricated by electron transport layer (ETL) interfacial modification. The highest power conversion efficiency (PCE) of device was ~ 17%. Cesium acetate and cesium carbonate were used with low temperature processed sol-gel ZnO ETL for interface modifications. Low leakage current and enhanced dark injection current are observed from dark current-voltage measurement. From the electrochemical impedance spectroscopy (EIS) measurement higher recombination resistance and lower interfacial contact resistance are observed in the PSC devices. Mott-Schottky analysis also shows the higher flat-band potential and enhanced device performance with cesium acetate ETL. Cesium acetate related ZnO ETL has large grain size which leads to reduce the device series resistance and contact resistance in PSC compared to cesium carbonate ETL related device. Perovskite film on cesium acetate ETL has better surface morphology, topography and hydrophobicity characterization compared to perovskite film grown on cesium carbonate ETL film. The material work function and electron injection barrier are also investigated by X-Ray photoelectron spectroscopy (XPS) measurement and ultraviolet photoelectron spectroscopy (UPS). From electrochemical impedance spectroscopy measurements the charge transport behaviour and trap-assisted carrier recombination are estimated. Fabricated PSCs device stability has been measured for a month-long degradation study. The PSC device stability is observed four times higher with cesium acetate PSCs compared to cesium carbonate ETL related PSCs. The overall device PCE is around 82% higher with cesium acetate compared to cesium carbonate devices. 

Keywords

Solar cells, perovskite solar cells, efficiency, stability, ZnO.

Current Issue

Smart Healthcare pulls up Clouds for Virtual Medicine


Selecting the correct electromagnetic inspection technology 


Influence of railway-track grinding on the track material condition and tribological behaviour


Micromechanical Fatigue Modelling of the Size Effect in Micro-Scale 316L Stainless Steel Specimens


Functionalization of Graphene and Reduced Graphene Oxide in Different Matrices


Effect of parasitic polytypes on ballistic electron transport in chemical vapor deposition grown 6H-SiC epitaxial layers


Photomemristive heterostructures based on two-dimensional crystals


Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers


Graphene and doped graphene: A comparative DFT study


Ag2CO3 / Magnetic reduced graphene oxide nanocomposite as advanced visible light photocatalytic hybrid materials for efficient degradation of azo dye


Optimization of acid hydrolysis process for the preparation cellulose nanofibrils


Alginate/k-carrageenan and alginate/gelatin composite hydrogel beads for controlled drug release of curcumin


Study of microstructure and mechanical properties of friction stir welded ferrite-martensite DP700 steel


Previous issues

9th Anniversary of Advanced Materials Letters: Progress and Opportunities

Coating - A potent method to enhance electrochemical performance of Li(NixMnyCoz)O2 cathodes for Li-ion batteries

Analysis of machined electron beam treated Ti6Al4V-ELI implant surfaces

Bottom-up design of hydrogels through click-chemistry modification of magnetic nanoparticles

Visualization of mechanical loads with semiconductor nanocrystals 

Room temperature growth of ultra porous hot-wire deposited tantalum pentoxide

Substrate integrated circular cavity resonator filled with nano-fibrillated cellulose for humidity detection

Oxygen vacancy filament-based resistive switching in Hf0.5Zr0.5O2 thin films for non-volatile memory

Innovative silicon compatible materials for light emitting devices  

Graphene micromesh for transparent conductive films application 

Applications of nano-scale Cirrus DopantTM to improve existing coatings

Chitin nanofibrils in renewable materials for packaging and personal care applications

Synthesis of AgNPs embedded double network nanocomposite hydrogels having high swelling and anti-bacterial characteristics

Upcoming Congress

Knowledge Experience at Sea TM