BROWSE

Related Researcher

Author's Photo

Shin, Tae Joo
UNIST Central Research Facilities (UCRF)
Research Interests
  • Synchrotron Radiation Application Researches

ITEM VIEW & DOWNLOAD

Efficient, stable and scalable perovskite solar cells using poly(3-hexylthiophene)

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Efficient, stable and scalable perovskite solar cells using poly(3-hexylthiophene)
Author
Jung, Eui HyukJeon, Nam JoongPark, Eun YoungMoon, Chan SuShin, Tae JooYang, Tae-YoulNoh, Jun HongSeo, Jangwon
Issue Date
2019-03
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE, v.567, no.7749, pp.511 - 515
Abstract
Perovskite solar cells typically comprise electron-and hole-transport materials deposited on each side of a perovskite active layer. So far, only two organic hole-transport materials have led to state-of-the-art performance in these solar cells(1): poly(triarylamine) (PTAA)(2-5) and 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD)(6,7). However, these materials have several drawbacks in terms of commercialization, including high cost(8), the need for hygroscopic dopants that trigger degradation of the perovskite layer(9) and limitations in their deposition processes(10). Poly(3-hexylthiophene) (P3HT) is an alternative hole-transport material with excellent optoelectronic properties(11-13), low cost(8,14) and ease of fabrication(15-18), but so far the efficiencies of perovskite solar cells using P3HT have reached only around 16 per cent(19). Here we propose a device architecture for highly efficient perovskite solar cells that use P3HT as a hole-transport material without any dopants. A thin layer of wide-bandgap halide perovskite is formed on top of the narrow-bandgap light-absorbing layer by an in situ reaction of n-hexyl trimethyl ammonium bromide on the perovskite surface. Our device has a certified power conversion efficiency of 22.7 per cent with hysteresis of +/- 0.51 per cent; exhibits good stability at 85 per cent relative humidity without encapsulation; and upon encapsulation demonstrates long-term operational stability for 1,370 hours under 1-Sun illumination at room temperature, maintaining 95 per cent of the initial efficiency. We extend our platform to large-area modules (24.97 square centimetres)-which are fabricated using a scalable bar-coating method for the deposition of P3HT-and achieve a power conversion efficiency of 16.0 per cent. Realizing the potential of P3HT as a hole-transport material by using a wide-bandgap halide could be a valuable direction for perovskite solar-cell research.
URI
https://scholarworks.unist.ac.kr/handle/201301/26611
URL
https://www.nature.com/articles/s41586-019-1036-3
DOI
10.1038/s41586-019-1036-3
ISSN
0028-0836
Appears in Collections:
UCRF_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU