2021


Fullerene-based Photoactive A-D-A Triads for Single-Component Organic Solar Cells: Incorporation of Non-Fused Planar Conjugated Core
Y. W. Lee, J. Yeop, J. Y. Kim*, H. Y. Woo*
Macromol. Res.
2021, 29(12), 871-881.



Aryl-Annulated [3,2-a] Carbazole-Based Deep-Blue Soluble Emitters for High-Efficiency Solution-Processed Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes with CIEy <0.1
J. Hwang, C. W. Koh, J. M. Ha, H. Y. Woo, S. Park*, M. J. Cho*, D. H. Choi*
ACS Appl. Mater. Interfaces
2021, 13, 61454-61462.



55

How heteroatom substitution in donor-acceptor copolymers affects excitonic and charge photogeneration processes in organic photovoltaic cells
J. Gallaher, S. Pugliese, M. A. Uddin, T. Lee, J. Y. Kim*, H. Y. Woo*, J. Hodgkiss*
J. Phys. Chem. C
2021, 125, 48, 26590–26600.



Progress in morphology control from fullerene to nonfullerene acceptors for scalable highperformance organic photovoltaics
S. Yoon, E.-Y. Shin, N.-K. Cho, S. Park, H. Y. Woo, H. J. Son*
J. Mater. Chem. A
2021, 9, 24729–24758.



Novel V-Shaped Bipolar Host Materials for Solution-Processed Thermally Activated Delayed Fluorescence OLEDs
D. W. Lee, J. Hwang, H. J. Kim, H. Lee, J. M. Ha, H. Y. Woo, S. Park*, M. J. Cho*, D. H. Choi*
ACS Appl. Mater. Interfaces
2021, 13, 41, 49076–49084.


High-efficiency organic solar cells enabled by an alcohol-washable solid additive
Y. Xie, H. S. Ryu, L. Han, Y. Cai*, X. Duan, D. Wei, H. Y. Woo*, Y. Sun*
Sci. China Chem.
2021, 64 (12), 2161-2168.



Enhanced Photocatalytic Degradation of Rhodamine B over Ag3PO4/Polyaniline/NiFe2O4 Nanocomposite under Solar Light Irradiation
A. K. Harit, S. Gupta, H. Y. Woo*, V. Chandra*
Inorganic Chemistry Communications 2021, 134, 109010.


50

Exciton energy transfer and bi-exciton annihilation in the emitting layers of thermally activated delayed fluorescence-based OLEDs
H. Kang, H. J. Ahn, G. W. Kim, J.-E. Jeong, H. Y. Woo, J.-Y. Kim*, S. Park*
J. Mater. Chem. C
2021, 9, 15141 - 15149.


Optimization of solvent swelling for efficient organic solar cells via sequential deposition
Q. Liao, B. Li, H.  Sun,* C. W. Koh, X. Zhang, B. Liu, H. Y. Woo,* X. Guo*
Materials Reports: Energy
2021, 1(4), 100063.


Ternary polymer solar cells with iridium-based polymer PM6Ir1 as donor and N3:ITIC-Th as acceptors exhibiting over 17.2% efficiency
S. Zhang, M. Zhang, X. Wang, C. Xu, W. Xu, J. Gao*, J. Wang, W.-Y. Wong*, J. H. Son, S. Y. Jeong, H. Y. Woo, F. Zhang*
Sustainable Energy & Fuels
2021, 5, 5825–5832.


Enhanced photomultiplication of organic photodetectors via phosphorescent material incorporation
J. Wang*, M. Liu, J. Chen, J. H. Son, S. Y. Jeong, J. Xiao, L. Chen, K. Yang, Z. Zhao, H. Y. Woo, X. Zhang, F. Zhang*
J. Mater. Chem. C 2021, 9, 16918-16924.


Fused Bithiophene Imide Dimer-Based n-Type Polymers for High-Performance Organic Electrochemical Transistors

K. Feng, W. Shan, S. Ma, Z. Wu, J. Chen,* H. Guo, B. Liu, H. Y. Woo,* S. Fabiano,* W. Huang, X. Guo*
Angew. Chem. Int. Ed. 2021, 133, 45, 24400-24407.


45

A pH-Neutral Polyelectrolyte Hole Transport Layer for Improved Energy Band Structure at the Anode / PTB7 Junction and Efficient Solar Cell Devices
J. H. Kang, A. K. Harit, J.-E. Jeong, H. Y. Woo, J. H. Seo*, B. Walker*
Solar RRL
2021, 5, 11, 2100521.


Transition metal catalysed molecular n-doping of organic semiconductors
H. Guo, C. Yang, X. Zhang, A. Motta, K. Feng, Y. Xia, Y. Shi, Z. Wu, K. Yang, J. Chen, Y. Tang, H. Sun, H. Y. Woo, S. Fabiano, A. Facchetti*, X. Guo*
Nature
2021, 599, 67-73.


Using Two Compatible Donor Polymers Boosts the Efficiency of Ternary Organic Solar Cells to 17.7%
W. Peng, Y. Lin*, S. Y. Jeong, Y. Firdaus, Z. Genene, A. Nikitaras, L. Tsetseris, H. Y. Woo, W. Zhu*, T. D. Anthopoulos*, E. Wang*
Chem. Mater.
2021, 33, 18, 7254–7262.


Fullerene-based Triads with Controlled Alkyl Spacer Length as Photoactive Materials for Single-Component Organic Solar Cells
Y. W. Lee, J. Yeop, H. Lim, W.-W. Park, J. F. Joung, S. Park, O.-H. Kwon*, J. Y. Kim*, H. Y. Woo*

ACS Appl. Mater. Interfaces 2021, 13, 36, 43174-43185.


Design of ultra-high luminescent polymers for organic photovoltaic cells with low energy loss
J. Wang, L. Ma, Y. W. Lee, H. Yao*, Y. Xu, S. Zhang, H. Y. Woo*, J. Hou*

Chem. Commun. 2021, 57, 9132-9135.


40

Narrow-Bandgap Single-Component Polymer Solar Cells with Approaching 9% Efficiency
S. Li, X. Yuan, Q. Zhang, B. Li, Y. Li, J. Sun, Y. Feng, X. Zhang, Z. Wu, H. Wei, M. Wang, Y. Hu, Y. Zhang, H. Y. Woo, J. Yuan,* W. Ma*
Adv. Mater.
2021, 33(32), 2101295.


Charge-Transfer Effect and Enhanced Photoresponsivity of WS2- and MoSe2-Based Field-Effect Transistors With π-Conjugated Polyelectrolyte
D. Kwon, J. Y. Kim, S.-H. Lee, E. Lee, J. Kim, A. K. Harit, H. Y. Woo*, J. Joo*

ACS Appl. Mater. Interfaces 2021, 13, 34, 40880-40890.


Flowable polysilsesquioxanes as robust solvent-free optical hard coatings
M. H. Choi, J. Y. Seo, J. Ahn, H. Y. Woo, S. Cho, S. S. Hwang, A. S. Lee*, K.-Y. Baek*

Reactive and Functional Polymers 2021, 167, 105030.


Completely Foldable Electronics Based on Homojunction Polymer Transistors and Logics
M. J. Kim, H. S. Ryu, Y. Y. Choi, D. H. Ho, Y. Lee, A. Tripathi, J. H. Son, Y. Lee, S. Kim, M. S. Kang, H. Y. Woo*, J. H. Cho*

Science Advances. 2021, 7 (34), eabg8169.


Regulating the Aggregation of Unfused Non-Fullerene Acceptors via Molecular Engineering towards Efficient Polymer Solar Cells
Y. L, H. Fu, Z. Wu, X. Wu, M. Wang, H. Qin, F. Lin, H. Y. Woo,* A. K.-Y. Jen*
ChemSucChem
2021, 14(17), 3579-3589.


35

Recent advances in organic luminescent materials with narrowband emission
J. M. Ha, S. H. Hur, A. Pathak, J.-E. Jeong*, H. Y. Woo*
NPG Asia Mater.
2021, 13, article # 53.


Selenium-containing two-dimensional conjugated fused-ring electron acceptors for enhanced crystal packing, charge transport, and photovoltaic performance
S.-S. Wan, Q. Zhao, Z. Jiang, G.-Z. Yuan, L. Yan, H. S. Ryu, A. Mahmood, Y.-Q. Liu, H. Li, H. Y. Woo, F. He*, J.-L. Wang*
J. Mater. Chem. A
2021, 9, 15665–15677.


Ultra-Deep-Blue Aggregation-Induced Delayed Fluorescence Emitters: Achieving Nearly 16% EQE in Solution-Processed Nondoped and Doped OLEDs with CIEy < 0.1
H. J. Kim, H. Kang, J.-E. Jeong, S. H. Park, C. W. Koh, C. W. Kim, H. Y. Woo, M. J. Cho*, S. Park*, D. H. Choi*
Adv. Funct. Mater.
2021, 31(33), 2102588.


Effect of Fused Thiophene Bridges on the Efficiency of Non-Fullerene Polymer Solar Cells made with Conjugated Donor Copolymers Containing Alkyl Thiophene-3-Carboxylate
S. H. Park, J.-S. Ahn, N. Y. Kwon, C. H. Diem, A. K. Harit, H. Y. Woo, M. J. Cho*, D. H. Choi*
Macromol. Res.
2021, 29(6), 435-442.


Rational Molecular Design of Azaacene-based Narrowband Green-emitting Fluorophores: Modulation of Spectral Bandwidth and Vibronic Transitions
J. M. Ha, H. B. Shin, J. Joung, W. J. Chung, J.-E. Jeong, S. Kim, S. H. Hur, S.-Y. Bae, J.-Y. Kim, J. Y. Lee*, S. Park*, H. Y. Woo*
ACS Appl. Mater. Interfaces
2021, 13, 22, 26227–26236.


30

A Synergistic Strategy of Manipulating the Number of Selenophene Units and Dissymmetric Central Core of Small Molecular Acceptors Enables Polymer Solar Cells with 17.5% Efficiency
C. Yang, Q. An,* H.-R. Bai, H.-F. Zhi, H. S. Ryu, A. Mahmood, X. Zhao, S. Zhang, H. Y. Woo, J.-L. Wang*
Angew. Chem. Int. Ed.
2021, 133(35), 19390-19401.


Multi‐Selenophene‐Containing Narrow Bandgap Polymer Acceptors for All‐Polymer Solar Cells with over 15% Efficiency and High Reproducibility
Q. Fan, H. Fu, Q. Wu, Z. Wu, F. Lin, Z. Zhu, J. Min, H. Y. Woo, A. K.-Y. Jen*
Angew. Chem. Int. Ed.
2021, 60 (29), 15935-15943.


Interfacial Defects Change the Correlation between Photoluminescence, Ideality Factor, and Open-Circuit Voltage in Perovskite Solar Cells
S. Kim, J. H. Jang, Z. Wu, M. J. Lee, H. Y. Woo*, I. Hwang*
Small
2021, 17(33), 2101839.


Efficient Green-Emitting Perovskite Light-Emitting Diodes Using a Conjugated Polyelectrolyte Additive
J. H. Park, A. K. Harit, C. H. Jang, J.-E. Jeong, H. Y. Woo*
Materials Today Energy
2021, 21, 100755.


Explaining the Fill-Factor and Photocurrent Losses of Nonfullerene Acceptor-Based Solar Cells by Probing the Long-Range Charge Carrier Diffusion and Drift Lengths
N. Tokmoldin,* J. Vollbrecht, S. M. Hosseini, B. Sun, L. Perdigon-Toro, H. Y. Woo, Y. Zou, D. Neher*, S. Shoaee*
Adv. Energy Mater. 2021, 11(22), 2100804.


25

Rational compatibility in a ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency
M. Jiang, H. Bai, H. Zhi, L. Yan, H. Y. Woo, L. Tong, J. Wang*, F. Zhang*, Q. An*
Energy Environ. Sci.
2021, 14(7), 3945-3953.


A high-conductivity n-type polymeric ink for printed electronics
C.-Y. Yang, M.-A. Stoeckel, T.-P. Ruoko, H.-Y. Wu, X. Liu, N. Kolhe, Z. Wu, Y. Puttisong, C. Musumeci, M. Massetti, H. Sun, K. Xu, D. Tu, W. Chen, H. Y. Woo, M. Fahlman, S. Jenekhe, M. Berggren, S. Fabiano*
Nat. Commun.
2021, 12, article # 2354.


Photophysical pathways in efficient bilayer organic solar cells: the importance of interlayer energy transfer
S. Y. Park, S. Chandrabose, M. B. Price, H. S. Ryu, T. H. Lee, Y. S. Shin, Z. Wu, W. Lee, K. Chen, S. Dai, J. Zhu, P. Xue, X. Zhan, H. Y. Woo*, J. Y. Kim*, J. M. Hodgkiss*
Nano Energy
2021, 84, 105924


Improved Stability of All-Polymer Solar Cells using Crosslinkable Donor and Acceptor Polymers bearing Vinyl Moieties in the Side-Chains
N. Y. Kwon, S. H. Park, H. Kang, Y. U. Kim, H. D. Chau, A. K. Harit, H. Y. Woo, H. J. Yoon, M. J. Cho*, D. H. Choi*
ACS Appl. Mater. & Interfaces
2021, 13(14), 16754–16765


Donor Engineered Deep-Blue Emitters for Tuning Luminescence Mechanism in Solution-Processed OLEDs
J. Hwang, H. Kang, J.-E. Jeong, H. Y. Woo, M. J Cho*, S. Park*, D. H. Choi*
Chemical Engineering Journal
2021, 416, 129185.


20

Complementary absorbing ternary blend containing structural isomeric donor polymers for improving the performance of PC61BM-based indoor photovoltaics
H. D. Chau, N. Y. Kwon, S. H. Park, J. Hwang, M. Kataria, A. K. Harit, H. Y. Woo, M. J. Cho*, D. H. Choi*
Polymer
2021, 221, 123606.


New hole transport styrene polymers bearing highly π-extended conjugated side-chain moieties for high-performance solution-processable thermally activated delayed fluorescence OLEDs
J. H. Lee, J. H. Hwang, C. W. Kim, A. K. Harit, H. Y. Woo, H. J. Kim, Y. W. Kim, D. H. Choi, M. J. Cho, D. H. Choi*

Poly. Chem.  2021, 12, 1692-1699


Hysteresis behavior of the donor-acceptor type ambipolar semiconductor for non-volatile memory applications
Y. J. Choi, J. Kim, M. J. Kim, H. S. Ryu, H. Y. Woo, J. Kang *
Micromachines
2021, 12(3), 301.


Nonhalogenated Solvent-Processed High-Performance Indoor Photovoltaics Made of New Conjugated Terpolymers with Optimized Monomer Compositions
S. H. Park, N. Y. Kwon, H. J. Kim, E. Cho, H. Kang, A. K. Harit, H. Y. Woo, H. J. Yoon, M. J. Cho*, D. H. Choi*
ACS Appl. Mater. & Interfaces
2021, 13(11), 13487–13498.


Synergistic effect of the selenophene-containing central core and the regioisomeric monochlorinated terminals on the molecular packing, crystallinity, film morphology, and photovoltaic performance of selenophene-based nonfullerene acceptors
G.-Y. Ge, W. Xiong, K.-K. Liu, H. S. Ryu, S.-S. Wan, B. Liu, A. Mahmood, H.-R. Bai, J.-F. Wang, Z. Wang, H. Y. Woo, Y. Sun*, J.-L. Wang*
J. Mater. Chem. C
2021, 2021,9, 1923-1935.


15

Ternary Organic Photovoltaic Cells Exhibiting 17.59% Efficiency with Two Compatible Y6 Derivations as Acceptor
X. Wang, Q. Sun, J. Gao, X. Ma, J. H. Son, S. Y. Jeong, Z. Hu, L. Niu*, H. Y. Woo*, J. Zhang, F. Zhang*

Solar RRL 2021, 5(3), 2100007.


Fullerene–Nonfullerene Hybrid Acceptors for Enhanced Light Absorption and Electrical Properties in Organic Solar Cells
Z. Wu, S. Lee, S. Y. Jeong, M. H. Jee, H. G. Lee, C. Lim, C. Wang, B. J. Kim*, H. Y. Woo*
Materials Today Energy,
2021, 20, 100651


Cyano-Functionalized Bithiophene Imide-Based n-Type Polymer Semiconductors: Synthesis, Structure-Property Correlations, and Thermoelectric Performance
K. Feng, H. Guo, J. Wang, Y. Shi, Z. Wu, M. Su, X. Zhang, J. H. Son, H. Y. Woo, X. Guo*

J. Am. Chem. Soc. 2021, 143, 3, 1539–1552.


High Efficiency (15.8%) All-Polymer Solar Cells Enabled by a Regioregular Narrow Bandgap Polymer Acceptor
H. Fu, Y. Li,* J. Yu, Z. Wu, Q. Fan, F. Lin, H. Y. Woo, F. Gao, Z. Zhu, A. K.-Y. Jen*
J. Am. Chem. Soc.
2021, 143, 7, 2665–2670.


Approaching 18% efficiency of ternary organic photovoltaics with wide bandgap polymer donor and well compatible Y6:Y6-1O as acceptor
X. Ma, A. Zeng, J. Gao, Z. Hu, C. Xu, J. H. Son, S. Y. Jeong, C. Zhang, M. Li, K. Wang, H. Yan, Z. Ma, Y. Wang, H. Y. Woo*, F. Zhang*

Natl. Sci. Rev. 2021, 8, nwaa305.


10

Indoor Organic Photovoltaics: Optimal cell design principles with synergistic parasitic resistance and optical modulation effect
M. A. Saeed, S. H. Kim, H. Kim, J. Liang, H. Y. Woo, T. G. Kim, H. Yan*, J. W. Shim*
Adv. Energy Mater.
2021, 11(27), 2003103.


Asymmetric Acceptors Enabling Organic Solar Cells to Achieve an over 17% Efficiency: Conformation Effects on Regulating Molecular Properties and Suppressing Nonradiative Energy Loss
W. Gao, H. Fu, Y. Li, F. Lin, R. Sun, Z. Wu, X. Wu, C. Zhong, J. Min*, J. Luo, H. Y. Woo, Z. Zhu, A. K.‐Y. Jen*
Adv. Energy Mater.
2021, 11(4), 2003177.


Terpolymer Acceptors Based on Bithiophene Imide for All-Polymer Solar Cells
W. Sun, J. Wang, Y. Shi, Z. Wu, Y. Tang, K. Feng, H. Y. Woo, X. Guo, F.-B. Zhang*
Dyes and Pigments
2021, 186, 109049.


Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors
F. Qi, K. Jiang, F. Lin, Z. Wu, H. Zhang, W. Gao, Y. Li, Z. Cai, H. Y. Woo, Z. Zhu, A. K.-Y. Jen*

ACS Energy Lett. 2021, 6, 1, 9−15.


Degenerately Doped Semi‐Crystalline Polymers for High Performance Thermoelectrics
Y. Lee, J. Park, J. Son, H. Y. Woo*, J. Kwak*

Adv. Funct. Mater. 2021, 31(9), 2006900


5


Quantifying Quasi-Fermi Level Splitting and Open-Circuit Voltage Losses in Highly Efficient Organic Solar Cells
L. Q. Phuong*, S. M. Hosseini, O. J. Sandberg*, Y. Zou, H. Y. Woo, D. Neher, S. Shoaee*

Solar RRL 2021, 5, 1, 2000649.


Organic photovoltaic cells with high efficiencies for both indoor and outdoor applications
Y. Xu, H. Yao*, L. Ma, Z. Wu, Y. Cui, L. Hong, Y. Zu, J. Wang, H. Y. Woo, J. Hou*

Mater. Chem. Front. 2021, 5, 893-900.


Biofilm development of Bacillus siamensis ATKU1 on pristine short chain low-density polyethylene: A case study on microbe-microplastics interaction
A. Tarafdar, J.-U. Lee, J.-E. Jeong, H. Lee, Y. Jung, H. B. Oh, H. Y. Woo, J.-H. Kwon*

Journal of Hazardous Materials 2021, 409, 124516.


Engineering of dendritic dopant-free hole transport molecules: enabling ultrahigh fill factor in perovskite solar cells with optimized dendron construction
W. Chen, Y. Wang*, B. Liu, Y. Gao, Z. Wu, Y. Shi, Y. Tang, K. Yang, Y. Zhang, W. Sun, X. Feng, F. Laquai, H. Y. Woo, A. B. Djurisic, X. Guo*, Z. He*

Sci. China Chem. 2021, 64, 41–51.


1


Highly Efficient Ternary All-Polymer Solar Cells with Enhanced Stability
K. Feng, Z. Wu, M. Su, S. Ma, Y. Shi, K. Yang, Y. Wang, Y. Zhang, W. Sun, X. Cheng, L. Huang, J. Min, H. Y. Woo*, X. Guo*

Adv. Funct. Mater. 2021, 31(5), 2008494.