Keshab Dahal

TL;DR: In this paper, a very active and durable pH-universal electrocatalyst for the hydrogen evolution reaction (HER) is constructed using a sandwich-like structure, where hierarchical cobalt phosphide (CoP) nanoparticles serve as thin skins covering both sides of Ni5P4/CoP microsheet arrays, forming self-supported sandwich-helene arrays with lots of mesopores and macropores.

TL;DR: In this paper, the first report on thermoelectric properties of n-type Sn chalcogenide alloys is presented, showing that with increasing content of iodine, the carrier concentration changed from 2.3 × 1017 cm−3 (p-type) to 5.0 × 1015 cm −3 (n-type), and the peak ZT of ≈ 0.8 at about 773 K measured along the hot pressing direction.

TL;DR: In this article, a room temperature carrier concentration of ∼2.7 × 1019 cm−3 was obtained in 2 atm% Na-doped SnSe samples with the highest power factor obtained in 1.5 atm % Na doping.

TL;DR: In this article, a peak dimensionless figure-of-merit (ZT) of ∼1 at 700 °C in a nanostructured p-type Nb0.05 composition is reported.

TL;DR: In this paper, a temperature-dependent carrier concentration can be realized by simultaneously introducing shallow and deep defect levels in PbTe, where iodine acts as the shallow donor level that supplies sufficient electrons and indium builds up the localized half-filled deep defect state in the band gap.