Dopant-free novel hole-transporting materials based on quinacridone dye for high-performance and humidity-stable mesoporous perovskite solar cells

Hong Duc Pham, Sagar M. Jain*, Meng Li, Sergei Manzhos, Krishna Feron, Sudhagar Pitchaimuthu, Zhiyong Liu, Nunzio Motta, Hongxia Wang, James R. Durrant, Prashant Sonar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (SciVal)

Abstract

This study reports three newly developed dopant-free hole-transporting materials (HTMs) for perovskite solar cells. The design is based on a quinacridone (QA) dye as the core with three different extended end-capping moieties, namely, acenaphthylene (ACE), triphenylamine (TPA) and diphenylamine (DPA), attached to the QA core. These HTMs were synthesized and used to successfully fabricate in mesoscopic TiO2/CH3NH3PbI3/HTM perovskite devices. Under AM 1.5G illumination at 100 mW cm-2, the devices achieved a maximum efficiency of 18.2% for ACE-QA-ACE, 16.6% for TPA-QA-TPA and 15.5% for DPA-QA-DPA without any additives, whereas reference devices with doped spiro-OMeTAD as the HTM achieved a PCE of 15.2%. Notably, the unencapsulated devices based on the novel dopant-free HTMs exhibited impressive stability in comparison with the devices based on doped spiro-OMeTAD under a relative humidity of 75% for 30 days. These linear symmetrical HTMs pave the way to a new class of organic hole-transporting materials for cost-efficient and large-area applications of printed perovskite solar cells.

Original languageEnglish
Pages (from-to)5315-5323
Number of pages9
JournalJournal of Materials Chemistry A
Volume7
Issue number10
Early online date4 Feb 2019
DOIs
Publication statusPublished - 14 Mar 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Dopant-free novel hole-transporting materials based on quinacridone dye for high-performance and humidity-stable mesoporous perovskite solar cells'. Together they form a unique fingerprint.

Cite this