Expanding the solvent diversity and perovskite compatibility of SnO inks that are directly deposited on perovskite layers.

Tin oxide (SnO) is an attractive electron transport material (ETM) for perovskite solar cells (PSCs) due to its optoelectronic properties, low-temperature solution processability, cost, and stability. However, solvent incompatibilities have largely limited its application to devices with SnO deposited below the perovskite. To expand its utility in other device structures, including inverted PSCs and tandem devices, alternate deposition strategies are needed.

Synthesizing and formulating metal oxide nanoparticle inks for perovskite solar cells.

The perovskite solar cell has commercial potential due to the low-cost of materials and manufacturing processes with cell efficiencies on par with traditional technologies. Nanomaterials have many properties that make them attractive for the perovskite devices, including low-cost inks, low temperature processing, stable material properties and good charge transport. In this feature article, the use of nanomaterials in the hole transport and electron transport layers are reviewed.

Solvation of NiOfor hole transport layer deposition in perovskite solar cells.

A series of nickel oxide (NiO) inks, in the perovskite antisolvent chlorobenzene (CB) containing 15% ethanol, were prepared for the fabrication of p-i-n perovskite solar cells by blade coating. The inks included triethylamine (EtN) and alkyl xanthate salts as ligands to disperse NiOparticle aggregates and stabilize suspension. A total of four inks were evaluated: 0X (EtN with no alkyl xanthate), 4X (EtN + potassium-butyl xanthate), 12X (EtN + potassium-dodecyl xanthate), and 18X (EtN + potassium-octadecyl xanthate).

Stable and Flexible Sulfide Composite Electrolyte for High-Performance Solid-State Lithium Batteries.

Sulfide-based lithium (Li)-ion conductors represent one of the most popular solid electrolytes (SEs) for solid-state Li metal batteries (SSLMBs) with high safety. However, the commercial application of sulfide SEs is significantly limited by their chemical instability in air and electrochemical instability with electrode materials (metallic Li anode and oxide cathodes). To address these difficulties, here, we design and successfully demonstrate a novel sulfide-incorporated composite electrolyte (SCE) through the combination of inorganic sulfide Li argyrodite (LiPS) with poly(vinylidenefluoride--hexafluoropropylene) (PVDF-HFP) polymer.

Intense pulsed light, a promising technique to develop molybdenum sulfide catalysts for hydrogen evolution.

We have demonstrated a simple and scalable fabrication process for defect-rich MoS directly from ammonium tetrathiomolybdate precursor using intense pulse light treatment in milliseconds durations. The formation of MoS from the precursor film after intense pulsed light exposure was confirmed with XPS, XRD, electron microscopy and Raman spectroscopy. The resulting material exhibited high activity for the hydrogen evolution reaction (HER) in acidic media, requiring merely 200 mV overpotential to reach a current density of 10 mA cm.