Efficient Inverted Solar Cells Using Benzotriazole-Based Small Molecule and Polymers

We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural,...

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Published inPolymers Vol. 13; no. 3; p. 393
Main Authors Lee, Ja Eun, Kim, Yoon, Na, Yang Ho, Baek, Nam Seob, Jung, Jae Woong, Choi, Yura, Cho, Namchul, Kim, Tae-Dong
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 27.01.2021
MDPI
Subjects
Benzotriazole
Carbazoles
Chemical synthesis
Energy conversion efficiency
Energy transfer
Molecular structure
Molybdenum oxides
Molybdenum trioxide
Morphology
Optical properties
Photovoltaic cells
Polymers
Sensors
Solar cells
Spectrum analysis
Zinc oxide
small-molecule solar cells
polymer solar cells
morphology
molecular aggregation
benzotriazole
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Abstract We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC BM/MoO /Ag showed a tremendously improved efficiency (PCE: 5.05%, : 9.95 mA/cm , : 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.
AbstractList We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC 71 BM/MoO 3 /Ag showed a tremendously improved efficiency (PCE: 5.05%, J sc : 9.95 mA/cm 2 , V oc : 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.
We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC71BM/MoO3/Ag showed a tremendously improved efficiency (PCE: 5.05%, Jsc: 9.95 mA/cm2, Voc: 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.
We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC BM/MoO /Ag showed a tremendously improved efficiency (PCE: 5.05%, : 9.95 mA/cm , : 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.
We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC71BM/MoO3/Ag showed a tremendously improved efficiency (PCE: 5.05%, Jsc: 9.95 mA/cm2, Voc: 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC71BM/MoO3/Ag showed a tremendously improved efficiency (PCE: 5.05%, Jsc: 9.95 mA/cm2, Voc: 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.
Author Lee, Ja Eun
Jung, Jae Woong
Baek, Nam Seob
Na, Yang Ho
Choi, Yura
Kim, Yoon
Cho, Namchul
Kim, Tae-Dong
AuthorAffiliation 1 Department of Advanced Materials, Hannam University, Daejeon 34054, Korea; 20194142@gm.hannam.ac.kr (J.E.L.); rladbs5334@gmail.com (Y.K.); yhna@hnu.kr (Y.H.N.)
2 ChemOptics, Daejeon 34026, Korea; bnbn3237@gmail.com
3 Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Youngin 17104, Korea; wodndwjd@khu.ac.kr
4 Department of Energy Systems Engineering, Soonchunhyang University, Asan 31538, Korea; bnbn3237@sch.ac.kr
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– name: 3 Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Youngin 17104, Korea; wodndwjd@khu.ac.kr
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Issue 3
Keywords small-molecule solar cells
polymer solar cells
morphology
molecular aggregation
benzotriazole
Language English
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Snippet We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an...
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StartPage 393
SubjectTerms Benzotriazole
Carbazoles
Chemical synthesis
Energy conversion efficiency
Energy transfer
Molecular structure
Molybdenum oxides
Molybdenum trioxide
Morphology
Optical properties
Photovoltaic cells
Polymers
Sensors
Solar cells
Spectrum analysis
Zinc oxide
Title Efficient Inverted Solar Cells Using Benzotriazole-Based Small Molecule and Polymers
URI https://www.ncbi.nlm.nih.gov/pubmed/33513679
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Volume 13
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