Article
Chemistry, Physical
Fenghua Zhang, Yujiao Yan, Mandi Li, Tao Lin, Denghui Xu, Xiong Li
Summary: In this study, a nonfullerene acceptor was introduced into the active layer of indoor photovoltaic devices, creating a ternary system specifically designed for indoor light conditions. By optimizing the acceptor ratio, a photovoltaic device suitable for low light intensity and commonly used indoor light sources was prepared, achieving significantly higher efficiency compared to traditional binary devices.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mukhamed L. Keshtov, Alexei R. Khokhlov, Dimitriy Y. Shikin, Vladimir Alekseev, Giriraj Chayal, Hemraj Dahiya, Manish Kumar Singh, Fang Chung Chen, Ganesh D. Sharma
Summary: A new medium bandgap non-fullerene small-molecule acceptor (IDT-TC) was designed and compared with IDT-IC acceptor in terms of optical and electrochemical properties. IDT-TC exhibited higher crystallinity and electron mobility compared to IDT-IC. In polymer solar cells, using IDT-TC as the acceptor and P as the donor, achieved a higher power conversion efficiency.
Review
Chemistry, Physical
Hongxing Liu, Tingting Dai, Jialing Zhou, Helin Wang, Qing Guo, Qiang Guo, Erjun Zhou
Summary: Compared with perovskite solar cells and silicon solar cells, excessive voltage loss is hindering the improvement of organic photovoltaic. Non-fullerene acceptors (NFAs) with acceptor-donor-acceptor'-donor-acceptor (A-DA'D-A) structure and non-halogenated end group (NHEG) have attracted attention for their potential to achieve high open-circuit voltage (V-OC). This review summarizes the recent development of A-DA'D-A type NHEG-NFAs and their impact on optoelectronic properties and photovoltaic performance.
Article
Chemistry, Physical
Adane Desta Fenta, Chun-Fu Lu, Abraha Tadese Gidey, Chin-Ti Chen
Summary: The study demonstrates that replacing PC71BM with the nonfullerene electron acceptor IT4F significantly improves the power conversion efficiency of the binary organic photovoltaic devices. In the ternary OPV system with a blending weight ratio of 1:1:0.25, the combination of PFT:IT4F:PC71BM further enhances the PCE. By finely tuning the OPV fabrication process, achieving a high PCE with devices containing a thick BHJ is possible.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Applied
Bing Huang Jiang, Ya-Juan Peng, Yu-Ching Huang, Ru-Jong Jeng, Tien-Shou Shieh, Ching- Huang, Chih-Ping Chen
Summary: The study found that adding FATZ to the ternary organic photovoltaic device based on PM6:Y6 can improve PCE, where the suitable energy levels and miscibility of FATZ are found to be beneficial for promoting the molecular packing of Y6.
Article
Chemistry, Multidisciplinary
Wuyue Liu, Shaoming Sun, Liang Zhou, Yong Cui, Wenkai Zhang, Jianhui Hou, Feng Liu, Shengjie Xu, Xiaozhang Zhu
Summary: Semitransparent organic solar cells (ST-OSCs) are important applications of organic solar cells, but the current high-performance ST-OSCs still lack a low enough optical band gap to achieve the optimal balance between power conversion efficiency and average visible transmittance. By designing and synthesizing a new acceptor SN and incorporating it into the PM6:Y6 system, the performance of the solar cells can be significantly improved.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Tao Zhang, Cunbin An, Ye Xu, Pengqing Bi, Zhihao Chen, Jingwen Wang, Ni Yang, Yi Yang, Bowei Xu, Huifeng Yao, Xiaotao Hao, Shaoqing Zhang, Jianhui Hou
Summary: The correlation between molecular structure and photovoltaic performance is investigated using two medium-bandgap nonfullerene acceptors. The study finds that a large electrostatic potential difference is important for achieving high-performance OPV cells.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xiaoling Ma, Changquan Tang, Yunlong Ma, Xixiang Zhu, Jian Wang, Jinhua Gao, Chunyu Xu, Yongsheng Wang, Jian Zhang, Qingdong Zheng, Fujun Zhang
Summary: Ternary organic photovoltaics constructed with one wide-band-gap donor PM6 and two A-D-A-type acceptors (M-series M36 and MQ5) achieved a power conversion efficiency of 17.24%. The optimization of ternary OPVs was attributed to the complementary absorption spectra of M36 and MQ5, maximizing photon harvesting and charge transport in the active layers. Introducing an appropriate amount of MQ5 resulted in more than an 8.8% improvement in PCE and demonstrated the huge potential of A-D-A-type materials in constructing highly efficient OPVs using a ternary strategy.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Ming Zhang, Lei Zhu, Tianyu Hao, Guanqing Zhou, Chaoqun Qiu, Zhe Zhao, Nicolai Hartmann, Biao Xiao, Yecheng Zou, Wei Feng, Haiming Zhu, Maojie Zhang, Yongming Zhang, Yongfang Li, Thomas P. Russell, Feng Liu
Summary: By utilizing the new physical properties of intimate eutectic mixing in nonfullerene-acceptor-based D-A(1)-A(2) ternary blends, the thin film morphology and electronic properties in organic solar cells are finely tuned to achieve significant enhancement in power conversion efficiency (PCE). The aligned cascading energy levels and suppressed recombination channels confirm efficient charge transfer and transport, leading to an improved PCE of 17.84%.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Minghai Xiong, Jingnan Wu, Qunping Fan, Qi Liu, Junfang Lv, Xuemei Ou, Xia Guo, Maojie Zhang
Summary: The research successfully enhanced the photovoltaic performance and increased the open-circuit voltage, short-circuit current density, and fill factor of organic solar cells by incorporating a suitable third component in a ternary strategy, achieving about 9% enhancement compared to the binary system. In addition, the optimized ternary device also exhibited better stability.
ORGANIC ELECTRONICS
(2021)
Article
Engineering, Environmental
Renjie Xu, Yuanyuan Jiang, Feng Liu, Wenli Su, Wuyue Liu, Shengjie Xu, Haijun Fan, Chengjun Jiang, Qianshou Zong, Wenkai Zhang, Xiaozhang Zhu
Summary: The open-circuit voltage (Voc) of organic solar cells (OSCs) is limited by the large non-radiative voltage loss (Delta Vocnonrad), which can be reduced by minimizing energy loss (Eloss). In this study, a new asymmetric nonfullerene acceptor, SN-O, was designed and synthesized to achieve higher Voc without sacrificing Jsc and FF. The addition of SN-O into the D18:Y6 system significantly reduced nonradiative energy loss, improved blend film morphology, and enhanced exciton dissociation, charge transport, and collection. As a result, an impressive PCE of 18.3% was achieved for the ternary D18:Y6:SN-O system.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xinming Zheng, Wenlong Liu, Hao Lu, Na Yu, Yunzhi Wang, Hao Huang, Song Li, Xiaodong Wang, Hang Wang, Yahui Liu, Xinjun Xu, Zheng Tang, Zhishan Bo
Summary: We designed and synthesized two simple fully nonfused ring electron acceptors, namely 4T-OEH and 4T-EH. Among them, 4T-OEH exhibited better molecular packing and absorption properties compared to 4T-EH. Furthermore, devices based on 4T-OEH showed higher charge transport efficiency. Our findings suggest that the performance of electron acceptors can be optimized by tuning the lateral substituents.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Christina Cheng, Stephen Wong, Garrett LeCroy, Sebastian Schneider, Enrique Gomez, Michael F. Toney, Alberto Salleo
Summary: The performance of nonfullerene-based organic solar cells is influenced by the morphology of the donor:acceptor blend, which is controlled by the composition. However, it is challenging to identify morphological design rules due to the complex relationship between composition-dependent phase behavior and device properties. In this study, the authors establish a direct link between PM6:Y6 film morphology and device properties by combining X-ray scattering and photocurrent spectroscopy. The results reveal that the charge transfer state at the amorphous-PM6:crystalline-Y6 interfaces controls the open-circuit voltage.
ADVANCED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Xuelin Wang, Qianqian Sun, Jinhua Gao, Xiaoling Ma, Jae Hoon Son, Sang Young Jeong, Zhenghao Hu, Lianbin Niu, Han Young Woo, Jian Zhang, Fujun Zhang
Summary: Efficient organic photovoltaic cells were fabricated using two structurally similar Y6 derivations as acceptor and PM6 as donor. By optimizing the composition of acceptors, higher power conversion efficiency and photovoltaic performance can be achieved. The good compatibility between acceptors plays a key role in improving the fill factor and short-circuit current density of the photovoltaic cells.
Article
Chemistry, Physical
Yuhan Meng, Tingting Dai, Jialing Zhou, Helin Wang, Ailing Tang, Yanfang Geng, Erjun Zhou
Summary: This study designed a wide-band-gap small molecule Cl-Qx3b and clarified the effect of halogen atoms on the photovoltaic property. Chlorination was found to show lower nonradiative voltage loss, while fluorination exhibited suppressed charge carrier recombination.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jinsook Sim, Somin Kim, Myungsu Jang, Minsuk Park, Hyunkyu Oh, Sang-Yong Ju
Article
Chemistry, Physical
Minsuk Park, Junmo Park, Jiyun Lee, Sang-Yong Ju
Article
Nanoscience & Nanotechnology
Minsuk Park, Kyeong-Im Hong, Seon-Mi Jin, Eunji Lee, Woo-Doug Jang, Sang-Yong Ju
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Junmo Park, Ye Ri Han, Minsuk Park, Chul-Ho Jun, Sang-Yong Ju
Article
Chemistry, Multidisciplinary
Minsuk Park, Seulki Yoon, Junmo Park, No-Hyung Park, Sang-Yong Ju
Article
Chemistry, Physical
Sukhyun Hong, Minsuk Park, Soonhyung Kwon, Jehyun Oh, Sungmin Bong, Balu Krishnakumar, Sang-Yong Ju
Summary: Focused laser irradiation of graphene/entrapped water/hydrophobic substrate leads to the formation of graphene nanostructures, which offers a viable approach for producing nanostructures from two dimensional materials. The vaporization of entrapped water promotes nanostructures by graphene sliding and bulging actions, demonstrating the potential importance of facile construction of graphene nanostructures for various applications.
Article
Chemistry, Physical
In-Seung Choi, Minsuk Park, Eunhye Koo, Sang-Yong Ju
Summary: Solvent-driven selection and solvatochromism in SWNTs wrapped by flavin derivatives were observed in solvents with different dielectric constants. The optical behavior was influenced by the solvents, with toluene and p-xylene showing the best quantum yields for flavin-SWNT nanocomposites. The selectivity and stability of the nanoconjugates were related to the solubility parameter, side chain morphology, and solvent properties.
Article
Chemistry, Multidisciplinary
Minsuk Park, Sang-Yong Ju
Summary: This study presents a successful transfer method for SWNT film to a prepatterned substrate position with a few micrometer precision. The method involves using PMMA-coated SWNT film and two sets of translators, achieving the transfer of thin SWNT film with a few tens of micrometer precision. The use of interfacial water plays a crucial role in modulating adsorption and desorption of the PMMA-coated SWNT film during the transfer process.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Younghoon Cheon, Youngsam Kim, Minsuk Park, Jehyun Oh, Eunhye Koo, Eunji Sim, Sang-Yong Ju
Summary: The study demonstrates that twisted bilayer graphene with a specific rotation angle can significantly enhance the Raman signals of copper phthalocyanine compared to single layer graphene. Reflection imaging spectroscopy and widefield Raman provide spatial and spectral information about the twisted bilayer graphene with different rotation angles and the corresponding van Hove singularities. Theoretical calculations suggest that the matching of energies between the van Hove singularities of twisted bilayer graphene and the frontier orbitals of copper phthalocyanine facilitates charge transfer processes.
Article
Chemistry, Multidisciplinary
Youngho Song, Minsuk Park, Junmo Park, Hyun S. Ahn, Tae Kyu Kim, Sang-Yong Ju
Summary: Understanding the long-term stability of MoS2 is crucial for optoelectronic applications. This study reveals that exposure to oxygen atmosphere can result in line unzipping of the MoS2 basal plane. Dry oxygen treatment promotes the formation of line defects, while humid oxygen treatment further enhances line unzipping. This study provides a guideline for MoS2 preservation and a method for controlled defect generation.
Article
Chemistry, Multidisciplinary
Minsuk Park, Seongjoo Hwang, Sang-Yong Ju
Summary: Using flavins with defined helical self-assembly helps in understanding chemical designs for obtaining high-purity semiconducting single-walled carbon nanotubes (SWNT) in a diameter-selective manner. This study investigates the effects of flavin side chain length and other parameters on SWNT dispersion and purity, and provides criteria for obtaining diameter-selective or high-purity s-SWNT.
Article
Chemistry, Multidisciplinary
Minsuk Park, In-Seung Choi, Sang-Yong Ju
Summary: This study presents a method to characterize and quantify carbonaceous impurities (CIs) in single-walled carbon nanotube (SWNT) dispersions and reveals their negative effects on the optoelectronic properties of SWNTs. Additionally, the extraction of CIs with chloroform results in a highly purified SWNT batch.
NANOSCALE ADVANCES
(2022)
Article
Engineering, Electrical & Electronic
Eunhye Koo, Yonggeun Lee, Youngho Song, Minsuk Park, Sang-Yong Ju
ACS APPLIED ELECTRONIC MATERIALS
(2019)
Article
Chemistry, Physical
Somin Kim, Myungsu Jang, Minsuk Park, No-Hyung Park, Sang-Yong Ju