PMID- 35712769
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220819
IS  - 2198-3844 (Electronic)
IS  - 2198-3844 (Linking)
VI  - 9
IP  - 23
DP  - 2022 Aug
TI  - "N-pi-N" Type Oligomeric Acceptor Achieves an OPV Efficiency of 18.19% with Low 
      Energy Loss and Excellent Stability.
PG  - e2202513
LID - 10.1002/advs.202202513 [doi]
LID - 2202513
AB  - A novel "N-pi-N" type oligomeric acceptor of 2BTP-2F-T, constructed by two small 
      non-fullerene acceptor (NFA) units linked with a thiophene pi bridge is reported. 
      The 2BTP-2F-T not only combines the advantages of small NFA and polymeric 
      acceptors (PYF-T-o) with similar units but also exhibits superior characteristics 
      of high absorption coefficient and high electron moblity(micro(e)) ) with less 
      dependence on molecular packing. Using PM6 as the donor, a remarkable efficiency 
      of 18.19% is obtained with an open circuit (V(oc) ) of 0.911 V, short current 
      circuit (J(sc) ) of 25.50 mA cm(-2) , and fill factor (FF) of 78.3%, which is 
      much better than that of the corresponding monomer (16.54%) and PYF-T-o (15.8%) 
      based devices. The much-improved efficiency results from two aspects: 1) an 
      enhanced FF due to the largely improved micro(e) and well-controlled morphology ; 2) 
      a higher value of (J(sc) x V(oc) ) due to its higher absorption coefficient and 
      efficient charge generation at a similar low energy loss. Furthermore, the 
      PM6/2BTP-2F-T device possesses the longest T(80) lifetime to light-soaking and 
      comparable high thermal stability with PM6/PYF-T-o. The results indicate that the 
      "N-pi-N" type oligomeric acceptor has a great application prospect due to its 
      superior high efficiency and improved stability in organic solar cells.
CI  - (c) 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
FAU - Zhang, Lili
AU  - Zhang L
AD  - CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center 
      for Nanoscience and Technology, Beijing, 100190, China.
AD  - Sino-Danish Center for Education and Research, Sino-Danish College, University of 
      Chinese Academy of Sciences, Beijing, 100190, China.
FAU - Zhang, Ziqi
AU  - Zhang Z
AD  - CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center 
      for Nanoscience and Technology, Beijing, 100190, China.
AD  - School of Nanoscience and Technology, University of Chinese Academy of Sciences, 
      Beijing, 100049, China.
FAU - Deng, Dan
AU  - Deng D
AD  - CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center 
      for Nanoscience and Technology, Beijing, 100190, China.
AD  - School of Nanoscience and Technology, University of Chinese Academy of Sciences, 
      Beijing, 100049, China.
FAU - Zhou, Huiqiong
AU  - Zhou H
AD  - CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center 
      for Nanoscience and Technology, Beijing, 100190, China.
FAU - Zhang, Jianqi
AU  - Zhang J
AD  - CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center 
      for Nanoscience and Technology, Beijing, 100190, China.
AD  - School of Nanoscience and Technology, University of Chinese Academy of Sciences, 
      Beijing, 100049, China.
FAU - Wei, Zhixiang
AU  - Wei Z
AUID- ORCID: 0000-0001-6188-3634
AD  - CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center 
      for Nanoscience and Technology, Beijing, 100190, China.
AD  - School of Nanoscience and Technology, University of Chinese Academy of Sciences, 
      Beijing, 100049, China.
LA  - eng
GR  - 51973044/National Natural Science Foundation of China/
GR  - 22135001/National Natural Science Foundation of China/
GR  - Y849291/Youth Innovation Promotion Association, Chinese Academy of Sciences/
GR  - XDB36000000/Strategic Priority Research Program of the Chinese Academy of 
      Sciences/
PT  - Journal Article
DEP - 20220616
PL  - Germany
TA  - Adv Sci (Weinh)
JT  - Advanced science (Weinheim, Baden-Wurttemberg, Germany)
JID - 101664569
SB  - IM
PMC - PMC9376851
OTO - NOTNLM
OT  - N-pi-N type
OT  - energy loss
OT  - oligomeric acceptor
OT  - organic solar cells
OT  - thermal stability
COIS- The authors declare no conflict of interest.
EDAT- 2022/06/18 06:00
MHDA- 2022/06/18 06:01
PMCR- 2022/06/16
CRDT- 2022/06/17 02:47
PHST- 2022/05/20 00:00 [revised]
PHST- 2022/05/02 00:00 [received]
PHST- 2022/06/18 06:00 [pubmed]
PHST- 2022/06/18 06:01 [medline]
PHST- 2022/06/17 02:47 [entrez]
PHST- 2022/06/16 00:00 [pmc-release]
AID - ADVS4207 [pii]
AID - 10.1002/advs.202202513 [doi]
PST - ppublish
SO  - Adv Sci (Weinh). 2022 Aug;9(23):e2202513. doi: 10.1002/advs.202202513. Epub 2022 
      Jun 16.