A fluorene-terminated hole-transporting material for highly efficient and stable perovskite solar cells

Nam Joong Jeon, Hyejin Na, Eui Hyuk Jung, Tae-Youl Yang, Yong Guk Lee, Geunjin Kim, Hee-Won Shin, Sang Seok, Jaemin Lee () and Jangwon Seo ()
Additional contact information
Nam Joong Jeon: Korea Research Institute of Chemical Technology (KRICT)
Hyejin Na: Korea Research Institute of Chemical Technology (KRICT)
Eui Hyuk Jung: Korea Research Institute of Chemical Technology (KRICT)
Tae-Youl Yang: Korea Research Institute of Chemical Technology (KRICT)
Yong Guk Lee: Korea Research Institute of Chemical Technology (KRICT)
Geunjin Kim: Korea Research Institute of Chemical Technology (KRICT)
Hee-Won Shin: Sungkyunkwan University
Sang Seok: Korea Research Institute of Chemical Technology (KRICT)
Jaemin Lee: Korea Research Institute of Chemical Technology (KRICT)
Jangwon Seo: Korea Research Institute of Chemical Technology (KRICT)

Nature Energy, 2018, vol. 3, issue 8, 682-689

Abstract: Abstract Perovskite solar cells (PSCs) require both high efficiency and good long-term stability if they are to be commercialized. It is crucial to finely optimize the energy level matching between the perovskites and hole-transporting materials to achieve better performance. Here, we synthesize a fluorene-terminated hole-transporting material with a fine-tuned energy level and a high glass transition temperature to ensure highly efficient and thermally stable PSCs. We use this material to fabricate photovoltaic devices with 23.2% efficiency (under reverse scanning) with a steady-state efficiency of 22.85% for small-area (~0.094 cm2) cells and 21.7% efficiency (under reverse scanning) for large-area (~1 cm2) cells. We also achieve certified efficiencies of 22.6% (small-area cells, ~0.094 cm2) and 20.9% (large-area, ~1 cm2). The resultant device shows better thermal stability than the device with spiro-OMeTAD, maintaining almost 95% of its initial performance for more than 500 h after thermal annealing at 60 °C.

Date: 2018
References: Add references at CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
https://www.nature.com/articles/s41560-018-0200-6 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:3:y:2018:i:8:d:10.1038_s41560-018-0200-6

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-018-0200-6

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().