15 research outputs found
Enhanced Water Vapor Blocking in Transparent Hybrid Polymer–Nanocrystal Films
Highly transparent and effective
encapsulating materials have become
increasingly important for photovoltaic (PV) modules to prevent water
vapor molecules from permeating PV cells. The composite consists of
block copolymer (PS-<i>b</i>-P2VP), comprised of hydrophobic
and hydrophilic parts, and hygroscopic nanocrystals (Magnesium Oxide,
MgO) incorporated to enhance water vapor blocking by both presenting
obstacles for mass transport and also scavenging water molecules.
The water vapor transmission rate (WVTR) values were reduced ∼3000
times, compared to homopolymer (PS), for both polymer and composite
samples. Achieving both high transparency and low WVTR, it is expected
that the composite materials can function as an excellent water vapor
blocking layer for PV modules
Functionalization of Silica Nanoparticles and Native Silicon Oxide with Tailored Boron-Molecular Precursors for Efficient and Predictive p -Doping of Silicon
International audienc