PMID- 35451222
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20220527
LR  - 20220527
IS  - 1613-6829 (Electronic)
IS  - 1613-6810 (Linking)
VI  - 18
IP  - 21
DP  - 2022 May
TI  - All-Small-Molecule Organic Solar Cells with Efficiency Approaching 16% and FF 
      over 80.
PG  - e2201400
LID - 10.1002/smll.202201400 [doi]
AB  - Molecule engineering has been demonstrated as a valid strategy to adjust the 
      active layer morphology in all-small-molecule organic solar cells (ASM-OSCs). In 
      this work, two non-fullerene acceptors (NFAs), FO-2Cl and FO-EH-2Cl, with 
      different alkyl side chains are reported and applied in ASC-OSCs. Compared with 
      FO-2Cl, FO-EH-2Cl is designed by replacing the octyl alkyl chains with branched 
      iso-octyl alkyl chains, leading to an enhanced molecular packing, crystallinity, 
      and redshifted absorption. With a small molecule BSFTR as donor, the device of 
      BSFTR:FO-EH-2Cl obtains a better morphology and achieves a higher power 
      conversion efficiency (PCE) of 15.78% with a notable fill factor (FF) of 80.44% 
      than that of the FO-2Cl-based device with a PCE of 15.27% and FF of 78.41%. To 
      the authors' knowledge, the FF of 80.44% is the highest value in ASM-OSCs. These 
      results demonstrate a good example of fine-tuning the molecular structure to 
      achieve suitable active layer morphology with promising performance for ASM-OSCs, 
      which can provide valuable insight into material design for high-efficiency 
      ASM-OSCs.
CI  - (c) 2022 Wiley-VCH GmbH.
FAU - Meng, Lingxian
AU  - Meng L
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Li, Mingpeng
AU  - Li M
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Lu, Guanyu
AU  - Lu G
AD  - Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 
      710054, P. R. China.
FAU - Shen, Zichao
AU  - Shen Z
AD  - Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 
      710054, P. R. China.
FAU - Wu, Simin
AU  - Wu S
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Liang, Huazhe
AU  - Liang H
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Li, Zhixiang
AU  - Li Z
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Lu, Guanghao
AU  - Lu G
AD  - Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 
      710054, P. R. China.
FAU - Yao, Zhaoyang
AU  - Yao Z
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Li, Chenxi
AU  - Li C
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Wan, Xiangjian
AU  - Wan X
AUID- ORCID: 0000-0001-5266-8510
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
FAU - Chen, Yongsheng
AU  - Chen Y
AUID- ORCID: 0000-0003-1448-8177
AD  - State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of 
      Nanoscale Science and Technology and Key Laboratory of Functional Polymer 
      Materials, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
LA  - eng
GR  - 52025033/NSFC/
GR  - 21935007/NSFC/
GR  - 2019YFA0705900/MoST/
GR  - 20JCZDJC00740/Tianjin city/
PT  - Journal Article
DEP - 20220421
PL  - Germany
TA  - Small
JT  - Small (Weinheim an der Bergstrasse, Germany)
JID - 101235338
SB  - IM
OTO - NOTNLM
OT  - alkyl side chains
OT  - all-small-molecule organic solar cells
OT  - fill factor
OT  - non-fullerene acceptors
EDAT- 2022/04/23 06:00
MHDA- 2022/04/23 06:01
CRDT- 2022/04/22 07:06
PHST- 2022/03/25 00:00 [revised]
PHST- 2022/03/03 00:00 [received]
PHST- 2022/04/23 06:00 [pubmed]
PHST- 2022/04/23 06:01 [medline]
PHST- 2022/04/22 07:06 [entrez]
AID - 10.1002/smll.202201400 [doi]
PST - ppublish
SO  - Small. 2022 May;18(21):e2201400. doi: 10.1002/smll.202201400. Epub 2022 Apr 21.