Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films

Eun Seon Cho; Christopher M. Evans; Emily C. Davidson; Megan L. Hoarfrost; Miguel A. Modestino; Rachel A. Segalman; Jeffrey J. Urban

doi:10.1021/mz500765y

Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films

Eun Seon Cho, Christopher M. Evans, Emily C. Davidson, Megan L. Hoarfrost, Miguel A. Modestino, Rachel A. Segalman, Jeffrey J. Urban

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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-b-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. (Figure Presented).

Original language	English (US)
Pages (from-to)	70-74
Number of pages	5
Journal	ACS Macro Letters
Volume	4
Issue number	1
DOIs	https://doi.org/10.1021/mz500765y
State	Published - Jan 20 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/mz500765y

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title = "Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films",

abstract = "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-b-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. (Figure Presented).",

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T1 - Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films

AU - Cho, Eun Seon

AU - Evans, Christopher M.

AU - Davidson, Emily C.

AU - Hoarfrost, Megan L.

AU - Modestino, Miguel A.

AU - Segalman, Rachel A.

AU - Urban, Jeffrey J.

PY - 2015/1/20

Y1 - 2015/1/20

N2 - 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-b-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. (Figure Presented).

AB - 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-b-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. (Figure Presented).

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Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films

Abstract

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