Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films

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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)70-74
Number of pages5
JournalACS Macro Letters
Volume4
Issue number1
DOIs
StatePublished - 2015

Fingerprint

Steam
Nanocrystals
Water vapor
Polymers
Composite materials
Magnesium Oxide
Molecules
Photovoltaic cells
Scavenging
Magnesia
Homopolymerization
Transparency
Block copolymers
Mass transfer
Water

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Cho, E. S., Evans, C. M., Davidson, E. C., Hoarfrost, M. L., Modestino, M., Segalman, R. A., & Urban, J. J. (2015). Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films. ACS Macro Letters, 4(1), 70-74. https://doi.org/10.1021/mz500765y

Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films. / Cho, Eun Seon; Evans, Christopher M.; Davidson, Emily C.; Hoarfrost, Megan L.; Modestino, Miguel; Segalman, Rachel A.; Urban, Jeffrey J.

In: ACS Macro Letters, Vol. 4, No. 1, 2015, p. 70-74.

Research output: Contribution to journalArticle

Cho, ES, Evans, CM, Davidson, EC, Hoarfrost, ML, Modestino, M, Segalman, RA & Urban, JJ 2015, 'Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films', ACS Macro Letters, vol. 4, no. 1, pp. 70-74. https://doi.org/10.1021/mz500765y
Cho ES, Evans CM, Davidson EC, Hoarfrost ML, Modestino M, Segalman RA et al. Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films. ACS Macro Letters. 2015;4(1):70-74. https://doi.org/10.1021/mz500765y
Cho, Eun Seon ; Evans, Christopher M. ; Davidson, Emily C. ; Hoarfrost, Megan L. ; Modestino, Miguel ; Segalman, Rachel A. ; Urban, Jeffrey J. / Enhanced water vapor blocking in transparent hybrid polymer-nanocrystal films. In: ACS Macro Letters. 2015 ; Vol. 4, No. 1. pp. 70-74.
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