Molecular Engineering in Hole Transport π-Conjugated Polymers to Enable High Efficiency Colloidal Quantum Dot Solar Cells

Muhibullah Al Mubarok, Havid Aqoma, Febrian Tri Adhi Wibowo, Wooseop Lee, Hyung Min Kim, Du Yeol Ryu, Ju Won Jeon, Sung Yeon Jang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Organic p-type materials are potential candidates as solution processable hole transport materials (HTMs) for colloidal quantum dot solar cells (CQDSCs) because of their good hole accepting/electron blocking characteristics and synthetic versatility. However, organic HTMs have still demonstrated inferior performance compared to conventional p-type CQD HTMs. In this work, organic π-conjugated polymer (π-CP) based HTMs, which can achieve performance superior to that of state-of-the-art HTM, p-type CQDs, are developed. The molecular engineering of the π-CPs alters their optoelectronic properties, and the charge generation and collection in CQDSCs using them are substantially improved. A device using PBDTTPD-HT achieves power conversion efficiency (PCE) of 11.53% with decent air-storage stability. This is the highest reported PCE among CQDSCs using organic HTMs, and even higher than the reported best solid-state ligand exchange-free CQDSC using pCQD-HTM. From the viewpoint of device processing, device fabrication does not require any solid-state ligand exchange step or layer-by-layer deposition process, which is favorable for exploiting commercial processing techniques.

Original languageEnglish
Article number1902933
JournalAdvanced Energy Materials
Volume10
Issue number8
DOIs
Publication statusPublished - 2020 Feb 1

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Molecular Engineering in Hole Transport π-Conjugated Polymers to Enable High Efficiency Colloidal Quantum Dot Solar Cells'. Together they form a unique fingerprint.

  • Cite this