Morphology control of solution processable small molecule bulk heterojunction solar cells via solvent additives

Jin Kuen Park, Chunki Kim, Bright Walker, Thuc Quyen Nguyen, Jung Hwa Seo

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

A new donor-acceptor type small molecule with dithienothiophene and diketopyrrolopyrrole units has been synthesized for application in organic solar cells. In order to optimize the nanoscale morphology of the small molecule solar cells, additives such as 1,8-diiodooctane (DIO) and 1-chloronaphthalene (CN) are used. The use of CN significantly suppresses molecular aggregation and allows suitable phase separation, enhancing power conversion efficiency from 0.5% to 2.2%.

Original languageEnglish
Pages (from-to)2232-2234
Number of pages3
JournalRSC Advances
Volume2
Issue number6
DOIs
StatePublished - 14 Mar 2012

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