{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Jang JH"],"funding":["Korea Institute of Energy Technology Evaluation and Planning","National Research Foundation of Korea"],"pagination":["9211-9218"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6648552"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["4(5)"],"pubmed_abstract":["In this study, we developed the universal encapsulation method using poly(vinyl alcohol-<i>co</i>-ethylene) (EVOH) to improve the water stability of perovskite solar cells. In order to enhance the moisture barrier property, we utilized SiO<sub>2</sub> and graphene oxide (GO) fillers in the EVOH matrix. First, UV-treated SiO<sub>2</sub> increased the dispersibility in the EVOH matrix and made the penetrating path more complicated, which led to a better moisture barrier property. The water vapor transmission ratio (WVTR) is enhanced from 4.72 × 10<sup>-2</sup> (EVOH only) to 1.55 × 10<sup>-2</sup> (EVOH with SiO<sub>2</sub> filler) g/m<sup>2</sup> day. Second, we found that GO reduce the unreacted hydroxyl groups that could attract water molecules at the surface of EVOH. The addition of GO increased the WVTR up to 3.34 × 10<sup>-3</sup> g/m<sup>2</sup> day. Finally, our EVOH-based film successfully encapsulated without the efficiency drop. The encapsulated devices surprisingly maintained 86% of their performance even under direct contact with water for 5 h."],"journal":["ACS omega"],"pubmed_title":["A Novel Approach for the Development of Moisture Encapsulation Poly(vinyl alcohol-<i>co</i>-ethylene) for Perovskite Solar Cells."],"pmcid":["PMC6648552"],"funding_grant_id":["20173010012970","2017M1A2A2048905"],"pubmed_authors":["Choi EY","Ji CH","Park N","Kim JH","Kim J","Kim BJ","Jang JH","Han E","Kim KT"],"additional_accession":[]},"is_claimable":false,"name":"A Novel Approach for the Development of Moisture Encapsulation Poly(vinyl alcohol-<i>co</i>-ethylene) for Perovskite Solar Cells.","description":"In this study, we developed the universal encapsulation method using poly(vinyl alcohol-<i>co</i>-ethylene) (EVOH) to improve the water stability of perovskite solar cells. In order to enhance the moisture barrier property, we utilized SiO<sub>2</sub> and graphene oxide (GO) fillers in the EVOH matrix. First, UV-treated SiO<sub>2</sub> increased the dispersibility in the EVOH matrix and made the penetrating path more complicated, which led to a better moisture barrier property. The water vapor transmission ratio (WVTR) is enhanced from 4.72 × 10<sup>-2</sup> (EVOH only) to 1.55 × 10<sup>-2</sup> (EVOH with SiO<sub>2</sub> filler) g/m<sup>2</sup> day. Second, we found that GO reduce the unreacted hydroxyl groups that could attract water molecules at the surface of EVOH. The addition of GO increased the WVTR up to 3.34 × 10<sup>-3</sup> g/m<sup>2</sup> day. Finally, our EVOH-based film successfully encapsulated without the efficiency drop. The encapsulated devices surprisingly maintained 86% of their performance even under direct contact with water for 5 h.","dates":{"release":"2019-01-01T00:00:00Z","publication":"2019 May","modification":"2024-02-15T16:18:02.986Z","creation":"2019-08-31T07:05:01Z"},"accession":"S-EPMC6648552","cross_references":{"pubmed":["31460010"],"doi":["10.1021/acsomega.9b00350"]}}