High-performance scalable organic photovoltaics with high thickness tolerance from 1 cm2 to above 50 cm2

Seongwon Yoon, Sungmin Park, So Hyun Park, Sanghee Nah, Seungjin Lee, Jin Woo Lee, Hyungju Ahn, Hyeonggeun Yu, Eul Yong Shin, Bumjoon J. Kim, Byoung Koun Min, Jun Hong Noh, Hae Jung Son

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

To realize a high-performance large-area organic photovoltaic (OPV) module using printing technology, it is important to produce a uniform and an optimal bulk heterojunction (BHJ) morphology over a large area with a high thickness tolerance. We developed PBDB-T-2F:N3:P(NDI2OD-T2) BHJ film, where P(NDI2OD-T2) forms intricate channels in the donor domain and induces improved exciton dissociation, balanced charge transport, and less charge recombination. Moreover, P(NDI2OD-T2) is effective for forming an optimal morphology with uniform nanocrystallites of the polymer donor over a large area in both cases of optimal and thick active films. Consequently, the patterned-blade-coating OPV module device with a 58.5 cm2 active area showed an improved efficiency of 14.04%, compared with 12.59% for the control device, which is among the highest efficiencies reported in OPVs with active areas above 50 cm2. Notably, the corresponding module prepared using a scribing method achieved an efficiency of 13.14% with a geometric fill factor of 91.82% from a 22.44 cm2 area.

Original languageEnglish
Pages (from-to)2406-2422
Number of pages17
JournalJoule
Volume6
Issue number10
DOIs
Publication statusPublished - 2022 Oct 19

Keywords

  • large area
  • organic photovoltaic modules
  • organic photovoltaics
  • polymer acceptor
  • ternary blend
  • thickness tolerance

ASJC Scopus subject areas

  • Energy(all)

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