Air‐Stable Organic Solar Cells Using an Iodine‐Free Solvent Additive. Issue 21 (9th August 2016)

• Record Type: Journal Article
• Authors: Lee, Seongyu; Kong, Jaemin; Lee, Kwanghee
• Is Part Of: Advanced energy materials. Volume 6:Issue 21(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-08-09
• Subjects: iodine‐mediated fullerene oxidation -- organic solar cells -- solvent additive degradation -- stability; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201600970
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract : It is observed that degradation of organic bulk heterojunction is directly associated with degradation of solvent additive, 1, 8‐diiodooctane. The iodide impurities released from 1, 8‐diiodooctane react with fullerenes, making fullerene‐iodide intermediate compounds which lead to fullerene oxidation and efficiency drop, irrespective of photooxidation of polymer in polymer/fullerene bulk heterojunctions. Replacing the additive with an iodine‐free reagent significantly elongates a device lifetime.