PMID- 31405275
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20190930
LR  - 20190930
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 11
IP  - 38
DP  - 2019 Sep 25
TI  - Modulating Structure Ordering via Side-Chain Engineering of 
      Thieno[3,4-b]thiophene-Based Electron Acceptors for Efficient Organic Solar Cells 
      with Reduced Energy Losses.
PG  - 35193-35200
LID - 10.1021/acsami.9b10641 [doi]
AB  - Nonfullerene-based organic solar cells (OSCs) have made a huge breakthrough in 
      the recent years. Introducing a proper side chain on the pi-conjugated backbone 
      plays a vital role for further improving the power conversion efficiency (PCE) of 
      OSCs due to easy tuning of the physical properties of the molecule such as 
      absorption, energetic level, solid-state stacking, and charge transportation. 
      More importantly, the side chain significantly affected the blend film's 
      morphology and thus determined the PCEs of the devices. In this work, two 
      low-band-gap nonfullerene acceptors, ATT-4 and ATT-5, with an alkyl or branched 
      alkyl substitute on indacenodithiophene (IDT) and thieno[3,4-b]thiophene (TbT) 
      backbone were synthesized for investigating the effect of the substituent on the 
      performance of the nonfullerene acceptors (NFAs). In comparison to ATT-1 with 
      p-hexylphenyl-substituted IDT and n-octyl-substituted TbT moieties, ATT-4 and 
      ATT-5 exhibit better crystallinity with shorter interchain distance and ordered 
      molecular structure in neat and the corresponding blend films. The tailored ATT-5 
      exhibits a high PCE of 12.36% with a V(oc) of 0.93 V, J(sc) of 18.86 mA cm(-2), 
      and fill factor (FF) of 0.71, blending with a wide-band-gap polymer donor PBDB-T. 
      Remarkably, although ATT-4 and ATT-5 exhibit broader light absorption, the 
      devices obtained higher V(oc) than that of ATT-1 mainly due to the reduced 
      nonradiative recombination in the blend films. These results implied that 
      side-chain engineering is an efficient approach to regulate the electronic 
      structure and molecular packing of NFAs, which can well match with polymer donor, 
      and obtain high PCEs of the OSCs with improved V(oc), J(sc), and FF, 
      simultaneously.
FAU - Liu, Feng
AU  - Liu F
AUID- ORCID: 0000-0002-0317-3455
AD  - Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic 
      Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , 
      China.
AD  - School of Chemistry and Chemical Engineering , University of Chinese Academy of 
      Sciences , Beijing 100049 , China.
FAU - Zhang, Jianyun
AU  - Zhang J
AD  - Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic 
      Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , 
      China.
AD  - School of Chemistry and Chemical Engineering , University of Chinese Academy of 
      Sciences , Beijing 100049 , China.
FAU - Wang, Yuming
AU  - Wang Y
AD  - Department of Physics Chemistry and Biology (IFM) , Linkoping University , 
      Linkoping SE-581 83 , Sweden.
FAU - Chen, Shanshan
AU  - Chen S
AD  - Department of Energy Engineering, School of Energy and Chemical Engineering, Low 
      Dimensional Carbon Material Center , Ulsan National Institute of Science and 
      Technology , Ulsan 689-798 , South-Korea.
FAU - Zhou, Zichun
AU  - Zhou Z
AD  - Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic 
      Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , 
      China.
AD  - School of Chemistry and Chemical Engineering , University of Chinese Academy of 
      Sciences , Beijing 100049 , China.
FAU - Yang, Changduk
AU  - Yang C
AUID- ORCID: 0000-0001-7452-4681
AD  - Department of Energy Engineering, School of Energy and Chemical Engineering, Low 
      Dimensional Carbon Material Center , Ulsan National Institute of Science and 
      Technology , Ulsan 689-798 , South-Korea.
FAU - Gao, Feng
AU  - Gao F
AD  - Department of Physics Chemistry and Biology (IFM) , Linkoping University , 
      Linkoping SE-581 83 , Sweden.
FAU - Zhu, Xiaozhang
AU  - Zhu X
AUID- ORCID: 0000-0002-6812-0856
AD  - Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic 
      Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , 
      China.
AD  - School of Chemistry and Chemical Engineering , University of Chinese Academy of 
      Sciences , Beijing 100049 , China.
LA  - eng
PT  - Journal Article
DEP - 20190910
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
SB  - IM
OTO - NOTNLM
OT  - energy loss
OT  - nonfullerene acceptors
OT  - organic solar cells
OT  - side-chain engineering
OT  - thieno[3,4-b]thiophene
EDAT- 2019/08/14 06:00
MHDA- 2019/08/14 06:01
CRDT- 2019/08/14 06:00
PHST- 2019/08/14 06:00 [pubmed]
PHST- 2019/08/14 06:01 [medline]
PHST- 2019/08/14 06:00 [entrez]
AID - 10.1021/acsami.9b10641 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2019 Sep 25;11(38):35193-35200. doi: 
      10.1021/acsami.9b10641. Epub 2019 Sep 10.