Review
Chemistry, Multidisciplinary
Xiaopeng Xu, Ying Li, Qiang Peng
Summary: This review provides an overview of the factors affecting the morphology of ternary blend organic solar cells (TB-OSCs) and summarizes the recent progress in morphology studies, including molecular crystallinity, molecular packing orientation, domain size and purity, etc. It also offers prospects for the future development of TB-OSCs.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yongfeng Ni, Xuan Liu, Yang Liu, Zhendong Feng, Dandan Tu, Xin Guo, Can Li
Summary: A new concept of nonalloy model is proposed for ternary organic solar cells, which can achieve high efficiency and stability by introducing a third component with moderate miscibility and distributing it in the interspace between donor and acceptor domains.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Bing-Huang Jiang, Yi-Peng Wang, Chuang-Yi Liao, Yi-Ming Chang, Yu-Wei Su, Ru-Jong Jeng, Chih-Ping Chen
Summary: Non-fullerene organic photovoltaics (OPVs) have achieved high power conversion efficiencies (PCEs). By optimizing the blend morphology of a two-donor (PM6, TPD-3F)/one-acceptor (Y6) ternary blend, improved OPV performance was achieved. Good miscibility between PM6 and TPD-3F, combined with device optimization using 1-chloronaphthalene as an additive, resulted in efficient exciton dissociation and carrier transport for higher PCE.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Xingpeng Liu, Sanshan Du, Zhijie Fu, Can Chen, Junfeng Tong, Jianfeng Li, Nan Zheng, Rongling Zhang, Yangjun Xia
Summary: The study utilized a ternary polymer donor and organic small molecule acceptor, introducing a third component PC71BM to enhance the morphology of the photoactive layer and improve device performance. The introduction of PC71BM not only improved morphology and promoted more efficient exciton transport, but also influenced molecular arrangement for better crystallization performance.
Article
Engineering, Environmental
Jinhua Gao, Xiaoling Ma, Chunyu Xu, Xuelin Wang, Jae Hoon Son, Sang Young Jeong, Yang Zhang, Caixia Zhang, Kai Wang, Lianbin Niu, Jian Zhang, Han Young Woo, Fujun Zhang
Summary: In this study, ternary-blend organic solar cells (TOSCs) were fabricated with PM6:BTP-4F-12 as the host system and IT-M as the third component, yielding a power-conversion-efficiency (PCE) of 17.71% with excellent thickness tolerance. The third component IT-M played multiple roles in improving the performance of TOSCs by optimizing molecular arrangement and phase separation in the active layers, leading to enhanced short-circuit-current density, open-circuit-voltage, and fill-factor.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Yingying Zhang, Tingting Dai, Xuejiao Zhou, Rong Hu, Xiong Li, Denghui Xu
Summary: Adding a solvent additive to the active layer of organic solar cells is a simple and effective strategy to improve performance. In this study, the use of binary additives DIO and CN in OSCs was found to effectively restrict charge recombination and improve carrier mobility, leading to a significantly higher power conversion efficiency compared to devices without additives.
Article
Chemistry, Physical
Zhiyong Liu, Hong-En Wang
Summary: A ternary heterojunction strategy using PBDB-T-2F, IT-4F, and NC(70)BA as donor, acceptor, and third component, respectively, leads to improved photovoltaic performance in polymer solar cells. The introduction of NC(70)BA optimizes light absorption and exciton dissociation, resulting in a highest power conversion efficiency of 13.90% in an optimized ratio. This ternary strategy shows promise for developing highly efficient ternary PSCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hong-En Wang, Zhiyong Liu
Summary: In this study, a fullerene derivative NC(70)BA was used as a guest acceptor and introduced into PM7:Y6 binary films to fabricate ternary organic solar cells. The optimized ternary films achieved a high power conversion efficiency and improved the properties of the photoactive layer.
ORGANIC ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Byeongsun Jun, Chi Ho Lee, Sang Uck Lee
Summary: In this study, we systematically investigated the strain-induced carrier mobility of two organic semiconductors and revealed their relationship with intermolecular packing configurations. The results showed periodic changes of the strain-induced carrier mobility, which can be attributed to the alternating phase changes of molecular orbital interactions. These findings are of significance for optimizing carrier mobility modulation and the development of organic electronic devices.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mengyun Jiang, Hairui Bai, Hongfu Zhi, Lu Yan, Han Young Woo, Lijia Tong, Jinliang Wang, Fujun Zhang, Qiaoshi An
Summary: In this study, ternary small-molecule organic solar cells were fabricated by incorporating a small molecule acceptor Y7 as a morphology modulator into a B1:BO-4Cl matrix, enabling fine-tuning of molecular arrangement to facilitate charge extraction and achieving top-ranked power conversion efficiency.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Linfang Yan, Junjie Ma, Pengwei Li, Shuangquan Zang, Liyuan Han, Yiqiang Zhang, Yanlin Song
Summary: This article summarizes the recent advances in carrier behavior of 2D Ruddlesden-Popper perovskite solar cells (PSCs) and provides guidelines and strategies for enhancing carrier transport.
ADVANCED MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Jose Jonathan Rubio Arias, Isabela Custodio MotanAff, Lais Schmidt Albuquerque, Karim Dahmouche, Maria de Fatima Vieira Marques
Summary: Thermal annealing is a crucial stage in the fabrication of active layers for organic solar cells. By using GIWAXS, the optimal annealing time and crystallization mechanisms of conjugated polymer films were determined in this study.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Energy & Fuels
Hoon-Seok Jeong, Dongeon Kim, Seungin Jee, Min-Jae Si, Changjo Kim, Jung-Yong Lee, Yujin Jung, Se-Woong Baek
Summary: The fabrication of heterostructures via solution process is a crucial technology for efficient advanced-generation optoelectronics. Hybrid structures using colloidal quantum dots (CQD) and organic semiconducting molecules are gaining research interest due to their complementary optical and electrical properties. However, the challenge lies in blending and stabilizing the materials to form a functioning electronic ink.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
Shunya Yan, Alba Cazorla, Adara Babuji, Eduardo Solano, Christian Ruzie, Yves H. Geerts, Carmen Ocal, Esther Barrena
Summary: The identification of polymorphs in organic semiconductors is significant for establishing structure-property relationships and understanding microscopic charge transport physics. By using GIWAXS and AFM, the morphology and structure of C8O-BTBT-OC8 films were found to be affected by temperature, and the molecular arrangement at the interface has a direct impact on the performance of OFETs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yuefang Wei, Yuyan Zhang, Yutong Ren, Bing Zhang, Yi Yuan, Jing Zhang, Peng Wang
Summary: The successful synthesis of star-shaped organic semiconductor TP-ETPA through a direct arylation reaction is reported. TP-ETPA exhibits improved hole mobility and solubility compared to spiro-OMeTAD, and it enhances the stability of perovskite solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hyeok-jin Kwon, Heqing Ye, Kyuwon Shim, Henok Getachew Girma, Xiaowu Tang, Bogyu Lim, Yejin Kim, Jihoon Lee, Chan Eon Park, Seo-Hyun Jung, Jong Mok Park, Yu Jin Jung, Do-Hoon Hwang, Hoyoul Kong, Se Hyun Kim
Summary: New solution-processable copolymers containing carboxyl and hydrophobic functionalities were synthesized, with the use of a fluorophenyl azide (FPA) based UV-assisted crosslinker to promote the movement of polar carboxyl groups and hydrophobic functionalities in thin film. This strategy maintained high dielectric constant characteristics and hydrophobic surface, eliminating trapsites and allowing stable operation and efficient charge transport.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xiaowu Tang, Hyeok-jin Kwon, Zhijun Li, Rixuan Wang, Se Jin Kim, Chan Eon Park, Yong Jin Jeong, Se Hyun Kim
Summary: Direct drawing techniques have simplified the patterning of soft electronic materials used in analog and digital integrated circuits. Selective deposition of gate insulators (GI) is equally important, and this study demonstrates the fabrication of six types of printed GI layers for use in organic field-effect transistors (OFETs) using electrostatic-force-assisted dispensing printing technique, resulting in practical integrated devices with robust performance and high gain values.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Saurav Limbu, Kyung-Bae Park, Jiaying Wu, Hyojung Cha, Sungyoung Yun, Seon-Jeong Lim, Hao Yan, Joel Luke, Gihan Ryu, Chul-Joon Heo, Sunghan Kim, Yong Wan Jin, James R. Durrant, Ji-Seon Kim
Summary: The study identified the critical role of donor molecular structure in organic photodetectors, showing that subtle structural changes in blends can significantly impact optoelectronic performance. These insights provide valuable information for the development of high-performance OPDs and highlight key differences in the design of BHJ blends for OPD and OPV devices.
Article
Chemistry, Multidisciplinary
Hyeok-jin Kwon, Heqing Ye, Yonghwa Baek, Jisu Hong, Rixuan Wang, Yonghwan Choi, Ilgeum Lee, Chan Eon Park, Sooji Nam, Juyoung Kim, Se Hyun Kim
Summary: The novel fluorinated organic-inorganic hybrid material FAGPTi, synthesized successfully, exhibits long-term colloidal stability and excellent flexibility and insulating properties in OTFTs as a gate dielectric layer. Introducing a fluorinated precursor results in stable spherical composites with strong repulsive forces, allowing for efficient fabrication of electronic materials and devices with highly stable driving characteristics under severe bending conditions.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Polymer Science
Hyeok-jin Kwon, Jisu Hong, Hong Nhung Le, Cheolmin Jung, Chan Eon Park, Hong Chul Moon, Juyoung Kim, Se Hyun Kim
Summary: This study introduces a sol-gel based fluorinated nanohybrid material FAGPTi for organic-inorganic hybrid thin film encapsulation, which demonstrates excellent barrier film performance in protecting water-corrosive Al2O3 and shows high visible transmittance above 95% in accelerated conditions. The systematic analysis of FAGPTi layers provides insights into their integration in flexible optoelectronic devices to advance their commercialization.
MACROMOLECULAR RESEARCH
(2021)
Article
Chemistry, Physical
Jisu Hong, Dongbo Zhang, Hyeok-jin Kwon, Chan Eon Park, Soon-Ki Kwon, Yun-Hi Kim
Summary: Two small-molecule cathode interfacial materials with phosphine oxide and benzoimidazole groups were synthesized and used in organic photovoltaic devices. These materials formed smooth interfacial layers, facilitating efficient charge carrier extraction at the electrodes and showing promising potential for photovoltaic applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Xiaowu Tang, Yohan Jo, Hyeok-Jin Kwon, Kaibin Wu, Zhijun Li, Seonghyeon Kim, Chan Eon Park, Tae Kyu An, Jihoon Lee, Se Hyun Kim
Summary: In this study, printable polymer series were synthesized and used as gate dielectrics for OTFTs. The effect of different polymer types on the driving stability of OTFTs was analyzed, with PFS-co-PVBCi (3:7) showing the best performance under continuous bias stress with almost negligible Vth shift. This research successfully implemented flexible OTFT and logic devices using printed PFS-co-PVBCi (3:7) dielectrics with stable operation properties.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Heqing Ye, Hyeok-jin Kwon, Su Cheol Shin, Hwi-young Lee, Young Ho Park, Xiaowu Tang, Ruxian Wang, Kanghyuck Lee, Jisu Hong, Zhijun Li, Wonkyo Jeong, Jiyeong Kim, Chan Eon Park, Jihoon Lee, Tae Kyu An, Insik In, Se Hyun Kim
Summary: This study demonstrates a novel strategy to induce high-k characteristics with durable polysilsesquioxane (PSQ)-based dielectrics, paving the way for the production of practical and printable high-k dielectrics for low-voltage-operating high-performance organic field-effect transistors (OFETs). Different PSQs exhibit distinct polarization phenomena, leading to different hysteresis behaviors during device operation.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiaying Wu, Hyojung Cha, Tian Du, Yifan Dong, Weidong Xu, Chieh-Ting Lin, James R. Durrant
Summary: The dynamics of charge carriers in organic solar cells and organic-inorganic hybrid metal halide perovskite solar cells were compared, discussing similarities and differences in charge generation, separation, transport, collection, and recombination, as well as their impact on device performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qiao He, Aniruddha Basu, Hyojung Cha, Matyas Daboczi, Julianna Panidi, Luxi Tan, Xiantao Hu, Chi Cheng Huang, Bowen Ding, Andrew J. P. White, Ji-Seon Kim, James R. Durrant, Thomas D. Anthopoulos, Martin Heeney
Summary: A new class of J-aggregating materials based on quinoidal indacenodithiophenes (IDTs) with ultra-narrowband NIR absorption peak is reported. The spectral width can be tuned by the length of the solubilizing alkyl group. The J-aggregate behavior is confirmed and their utility as electron-transporting materials is demonstrated.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Hyojung Cha
Summary: Non-fullerene acceptors have gained significant interest as potential alternatives to fullerene derivatives in bulk-heterojunction solar cells. However, the understanding of charge carrier generation and transfer mechanism at the interface between non-fullerene molecules and donor polymers lags behind their enhanced photovoltaic performance. In this study, a non-planar perylene dimer (TP) was used as an electron acceptor, achieving a power conversion efficiency of 6.29% in a fullerene-free solar cell. High quenching efficiency, efficient electron and hole transfer, and intermixed phase of blends were observed, indicating the promising potential of TP as an electron acceptor.
Article
Chemistry, Physical
Gayoung Ham, Damin Lee, Changwoo Park, Hyojung Cha
Summary: In this study, the charge generation mechanism in bulk-heterojunction organic solar cells with non-fullerene acceptors (NFAs) was investigated. It was found that the presence of processing additives significantly enhanced charge carrier generation and prolonged charge carrier lifetimes, leading to improved performance.
Article
Chemistry, Multidisciplinary
Andrew J. Clarke, Joel Luke, Rico Meitzner, Jiaying Wu, Yuming Wang, Harrison K. H. Lee, Emily M. Speller, Helen Bristow, Hyojung Cha, Michael J. Newman, Katherine Hooper, Alex Evans, Feng Gao, Harald Hoppe, Iain McCulloch, Ulrich S. Schubert, Trystan M. Watson, James R. Durrant, Wing C. Tsoi, Ji-Seon Kim, Zhe Li
Summary: The photostability of 10 OSC devices fabricated with various NFAs blended with donor polymers has been investigated in this study. It was found that O-IDTBR and EH-IDTBR form highly stable devices, while ITIC and ITIC-M devices suffer from poor stability. The conformational instability of ITIC and ITIC-M molecules is responsible for their poor photostability, leading to undesirable device stability.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Chemistry, Physical
Minkyu Kyeong, Jinho Lee, Matyas Daboczi, Katherine Stewart, Huifeng Yao, Hyojung Cha, Joel Luke, Kwanghee Lee, James R. Durrant, Ji-Seon Kim, Sukwon Hong
Summary: This study investigated the chemical reaction between PEI and INCN-based NFAs, revealing the mechanism of product generation and successfully developing a series of functionalized PEIs to fabricate highly efficient and stable NFA organic solar cells. The use of functionalized PEIs led to NFA organic solar cells with high power conversion efficiency values of over 15% and thermally stable device operation for more than 360 hours at 100 degrees C.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Electrical & Electronic
Hyeok-jin Kwon, Kibeom Nam, Zhijun Li, Xiaowu Tang, Cheolmin Jung, Chan Eon Park, Xinlin Li, Dong Yun Lee, Se Hyun Kim
Summary: The study presents a facile and scalable strategy for fabricating poly(3-hexylthiophene-2,5-diyl) (P3HT) patterns through flow-blade coating process, achieving enhanced edge-on orientation of P3HT with uniform electrical and morphological properties in large-area integrated OFET arrays. Various surface-modified dielectrics influenced the morphological properties of patterned P3HT, with alkyl-terminated self-assembled monolayers achieving optimum conditions for OFETs. Analysis tools revealed that flow-blade coating produces P3HT patterns with improved edge-on orientation and consistent films regardless of pattern width.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jinfei Dai, Chenjing Zhao, Jie Xu, Hossein Roshan, Hua Dong, Francesco Di Stasio, Fang Yuan, Bo Jiao, Zhaoxin Wu
Summary: In this study, the performance of perovskite nanocrystal light emitting diodes (PNC-LEDs) was enhanced through rational device structure design and the application of high-performance perovskite nanocrystal emitting layers.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Jia-Hua Yeh, Suhendro Purbo Prakoso, Leon Lukhas Santoso, Shi-Ju Chen, Bryan Chiang, Ju-Chieh Cheng, Ru-Ning Zhang, Yu-Cheng Chiu
Summary: This study demonstrates the application of a renewable material called dextrin-SMS in the production of electret filters and transistor memory. Dextrin-SMS material can maintain prolonged electrostatic charges and has a relatively wide memory window, making it suitable for the production of biodegradable face masks and green electronics.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Ahmad Telfah, Qais M. Al-Bataineh, Ahmad A. Ahmad, Rund Abu-Zurayk, Carlos J. Tavares, Johannes Etzkorn, Farzad Foadian
Summary: Polyacrylic acid complexed with polyaniline (PAA/PANI) composite materials have the potential to form organic mixed ion-electron conductive (OMIEC) films, which can be used in optoelectronic and energy storage applications. The composite films are formed through an acid-base reaction, resulting in strong electrostatic interactions and intermolecular hydrogen bonds between PANI and PAA. The separation of PANI-rich domains from PAA-rich matrix in the composite films is observed. The electrical conductivity of the composite films is higher when the content of PANI is 33 wt%, due to the high ionic-electronic coupling at the interface between phase-separated regions.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Min-Chih Hou, Dian Luo, Yu-Ting Huang, Shun-Wei Liu, Chin-Wei Lu, Chih-Hao Chang, Hai-Ching Su
Summary: Light-emitting electrochemical cells (LECs) have great potential for novel emission applications, but their relatively low device efficiency hinders their competitiveness with other emission technologies. A study finds that increasing the concentration of small TiO2 nano-particles in the diffuser film can enhance light extraction and improve the device efficiency of LECs.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Qiaoli Niu, Yao Xu, Jun Yang, Wei Hua, Baoxiang Chai, Zequan Zhang, Yuhui Ma, Wenjin Zeng, Ana Flavia Nogueira, Ruidong Xia
Summary: By introducing CPB as a defect passivation agent in the perovskite precursor solution, the optoelectronic properties of perovskite films can be significantly improved and non-radiative carrier recombination can be effectively suppressed. CPB-modified perovskite solar cells exhibit lower trap-state density and stronger carrier migration capability, leading to enhanced power conversion efficiency and stability.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Hulya Ozturk Dogan, Fatma Yildirim, Zeynep Orhan, Ali Ben Ahmed, Mostefa Benhaliliba, Sakir Aydogan
Summary: In this study, efficient self-powered visible and UV photodetectors based on hybrid organic-inorganic materials were demonstrated. The photodetectors showed excellent UV detecting capability and good photoresponsivity.
ORGANIC ELECTRONICS
(2024)
