Role of Exciton Lifetime, Energetic Offsets, and Disorder in Voltage Loss of Bulk Heterojunction Organic Solar Cells.

Recently, the power conversion efficiency (PCE) of organic solar cells (OSCs) has significantly progressed with a rapid increase from 10 to 19% due to state-of-the-art research on nonfullerene acceptor molecules and various device processing strategies. However, OSCs still exhibit significant open circuit voltage loss (Δ ∼ 0.6 V) due to high energetic offsets and molecular disorder.

Understanding the linear and nonlinear optical responses of few-layer exfoliated MoSand WSnanoflakes: experimental and simulation studies.

Understanding the linear and nonlinear optical (NLO) responses of two-dimensional nanomaterials is essential to effectively utilize them in various optoelectronic applications. Here, few-layer MoSand WSnanoflakes with lateral size less than 200 nm were prepared by liquid-phase exfoliation, and their linear and NLO responses were studied simultaneously using experimental measurements and theoretical simulations. Finite-difference time-domain (FDTD) simulations confirmed the redshift in the excitonic transitions when the thickness was increased above 10 nm indicating the layer-number dependent bandgap of nanoflakes.

Gastrointestinal parasites of Asian elephants ( L. 1798) in south Wayanad forest division, Kerala, India.

Microscopic-coprological examination of Asian Elephant ( L., 1798) dung piles (n = 55) in South Wayanad Forest Division from March to August, 2017 revealed 74.5% prevalence of parasites in elephants.

Organic bistable memory devices based on MoO nanoparticle embedded Alq structures.

Organic bistable memory devices were fabricated by embedding a thin layer of molybdenum trioxide (MoO) between two tris-(8-hydroxyquinoline)aluminum (Alq) layers. The device exhibited excellent switching characteristics with an ON/OFF current ratio of 1.15 × 10 at a read voltage of 1 V.