Article
Thermodynamics
Zafar Arshad, Asif Hussain Khoja, Sehar Shakir, Asif Afzal, M. A. Mujtaba, Manzoore Elahi M. Soudagar, H. Fayaz, C. Ahamed Saleel, Sarah Farukh, Mudassar Saeed
Summary: This study systematically investigates the enhancement of optical and morphological properties of TiO2-based ETL by doping with Mg, leading to improved interface for the growth of the absorber layer in PSCs. Optoelectronic studies show effective reduction of band gap and enhanced absorption range with the addition of Mg, while electrical analysis reveals enhanced conduction and sheet carrier mobility. Thermal studies indicate the fabrication of a thermally stable ETL material for PSCs. J-V measurements demonstrate more than two-fold increase in photovoltaic efficiency with 3 wt% Mg.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jules Bertrandie, Jianhua Han, Catherine S. P. De Castro, Emre Yengel, Julien Gorenflot, Thomas Anthopoulos, Frederic Laquai, Anirudh Sharma, Derya Baran
Summary: The study investigates the energy levels of 33 organic semiconductors using multiple techniques and explores their impact on the performance of solar cells. The findings reveal that high-performing systems have significant ionization energy offsets, and vanishing ionization energy offsets are detrimental to device performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Dou Luo, Yuniu Zhang, Lanqing Li, Chengwei Shan, Qian Liu, Zhaojin Wang, Wallace C. H. Choy, Aung Ko Ko Kyaw
Summary: This study develops three simple NFREAs with absorption up to 1000 nm and investigates their effects on photoelectric properties and device performances. By optimizing the device structure, high efficiency is achieved with low energy loss.
MATERIALS TODAY ENERGY
(2022)
Article
Energy & Fuels
Kai Cheong Tam, Hirotoshi Saito, Philipp Maisch, Karen Forberich, Sarmad Feroze, Yutaka Hisaeda, Christoph J. Brabec, Hans-Joachim Egelhaaf
Summary: This research addresses the performance gap between commercially available organic photovoltaic modules and hero cells in literature by developing a printable silver nanoparticle film top electrode. The AgNP electrode achieves almost the same power conversion efficiencies as evaporated silver electrodes and performs even better under low light conditions. This work demonstrates that fully printed OPV modules can achieve similar performance as small scale OPV cells with evaporated electrodes, offering an attractive alternative for large scale manufacturing.
Article
Multidisciplinary Sciences
Hongyuan Fu, Jia Yao, Ming Zhang, Lingwei Xue, Qiuju Zhou, Shangyu Li, Ming Lei, Lei Meng, Zhi-Guo Zhang, Yongfang Li
Summary: This study developed a simple and inexpensive boron trifluoride etherate-catalyzed Knoevenagel condensation method for the efficient synthesis of high-performing acceptor-donor-acceptor structured small molecule acceptors. Compared with traditional methods, this approach significantly reduces costs and provides an important synthetic tool for the development of PSCs and other emerging technologies.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Bo Chen, Zhenhua Yu, Arthur Onno, Zhengshan Yu, Shangshang Chen, Jiantao Wang, Zachary C. Holman, Jinsong Huang
Summary: This paper reports on a bifacial all-perovskite tandem structure that achieves an equivalent efficiency of 29.3% under a back-to-front irradiance ratio of 30. By embedding a light-scattering micrometer-sized particle layer and using a nonacidic hole transport layer, the efficiency of semitransparent Pb-Sn cells is increased from 15.6% to 19.4%, enabling the fabrication of efficient bifacial all-perovskite tandem devices.
Article
Nanoscience & Nanotechnology
Virginia Cuesta, Manish Kumar Singh, Edgar Gutierrez-Fernandez, Jaime Martin, Rocio Dominguez, Pilar de la Cruz, Ganesh D. Sharma, Fernando Langa
Summary: A new and efficient electron-accepting compound based on gold porphyrins was discovered, and it was successfully blended with a donor polymer to fabricate organic solar cells with high performance. This work provides new guidelines for the search of efficient acceptor molecules and the design of photovoltaic materials in the future.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Moritz Riede, Donato Spoltore, Karl Leo
Summary: Organic solar cells have the potential to be the cheapest form of electricity, surpassing silicon photovoltaics. However, challenges remain in increasing efficiency and long-term stability. The technology could be used in building integrated photovoltaics and portable electronics, with the potential to have the lowest carbon footprint of all energy generation technologies.
ADVANCED ENERGY MATERIALS
(2021)
Review
Optics
Jason A. Rohr, B. Edward Sartor, Jason Lipton, Andre D. Taylor
Summary: Our oceans are vast and difficult to monitor, but a fully autonomous 'Internet of Underwater Things' powered by underwater solar energy could revolutionize data collection. However, traditional silicon solar cells do not perform well underwater, so alternative materials like GaInP variants, CdTe, organic semiconductors, and perovskite semiconductors need to be explored. Challenges such as antifouling coatings and new certification standards must also be addressed.
Article
Chemistry, Multidisciplinary
Lingyun Zhu, Jianqi Zhang, Yuan Guo, Chen Yang, Yuanping Yi, Zhixiang Wei
Summary: Y6 as an NFA, with its unique charge polarization effects, has a small exciton binding energy, resulting in a distinct mechanism for charge generation in photovoltaic devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Electrical & Electronic
Hyokwon Kim, Da-Seul Choi, Seok-In Na, Kyukwan Zong
Summary: Two BTT-based copolymers, P1 and P2, were designed and synthesized by utilizing DPP and DFBT as acceptors, and two OPV devices were fabricated based on traditional non-fullerene architecture. Optimizing polymer concentrations, additive concentrations, and other factors resulted in different performances for P1 and P2, which were closely related to the morphologies of the blend films.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Emma L. K. Spooner, Elena J. Cassella, Joel A. Smith, Thomas E. Catley, Sam Burholt, David G. Lidzey
Summary: The introduction of Y-series non-fullerene acceptors has greatly improved the power conversion efficiencies of organic solar cells. This study demonstrates, for the first time, the deposition of a Y-series-based system using ultrasonic spray coating, which has the potential for significantly faster deposition speeds than traditional methods. The use of an air-knife enables rapid removal of the casting solvent and overcomes film reticulation, resulting in spray-coated PM6:DTY6 devices with PCEs of up to 14.1%. The study also highlights the challenges of scalable coating for Y-series-based solar cells, particularly the influence of slower drying times on blend morphology and crystallinity. The compatibility of ultrasonic spray coating with high-speed roll-to-roll OSC manufacturing techniques is demonstrated.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Physical
Qiuju Liang, Wangchang Li, Haodong Lu, Zhenhao Yu, Xinyi Zhang, Qingjie Dong, Chunpeng Song, Zongcheng Miao, Jiangang Liu
Summary: BHJ organic photovoltaics are highly promising for green energy technology, but optimizing the morphology of the active layer is crucial. The addition of solid additives has become a popular strategy, but the relationship between additive properties and active layer morphology is still unclear.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Gururaj P. Kini, Sung Jae Jeon, Doo Kyung Moon
Summary: Semi-transparent organic solar cells (ST-OSCs) have shown significant progress recently, with increased power conversion efficiency and average visible transparency, achieved through the use of low bandgap semiconductors. This technology has transformed traditional OSC devices into multifunctional devices, paving the way for future applications in various fields.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Bo Wang, Wenbin Lai, Shijie Liang, Yikun Wang, Chao Wang, Chengyi Xiao, Weiwei Li
Summary: This study investigates the feasibility of using non-fused electron acceptors in all-polymer solar cells for indoor applications. Different polymers were designed and synthesized with modified linker units, and the impact of these linkers on various properties was explored. The results suggest that optimum phase separation and charge mobilities can lead to high power conversion efficiency in these all-polymer solar cells.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Organic
Xue-Lin Zheng, Hao-Sheng Lin, Bo-Wen Zhang, Shigeo Maruyama, Yutaka Matsuo
Summary: A conjugated donor-acceptor antiaromatic porphyrin was synthesized and successfully applied in a perovskite solar cell, leading to a significantly increased power conversion efficiency.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yuri Katagiri, Yamato Tsuchida, Yutaka Matsuo, Michito Yoshizawa
Summary: An efficient micellar capsule was designed and prepared to uptake molecules of different sizes, even forming ternary core-shell structures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Kazuhira Miwa, Shinobu Aoyagi, Takahiro Sasamori, Shogo Morisako, Hiroshi Ueno, Yutaka Matsuo, Hideki Yorimitsu
Summary: The reduction of fullerene (C-60) with sodium dispersion in the presence of an excess amount of dipropyl sulfate yields highly propylated fullerene, C-60(nC(3)H(7))(n) (max. n = 24), with C-60(nC(3)H(7))(20) being predominantly generated as indicated by mass spectrometry.
Article
Chemistry, Multidisciplinary
Seungju Seo, Kosuke Akino, Jeong-Seok Nam, Ahmed Shawky, Hao-Sheng Lin, Hiroki Nagaya, Esko Kauppinen, Rong Xiang, Yutaka Matsuo, Il Jeon, Shigeo Maruyama
Summary: MoO3 doping of carbon-nanotube top electrodes in perovskite solar cells improves hole transport and energy-level alignment. It also decreases the sheet resistance without damaging the perovskite film. Additionally, MoO3 deposition enhances hole collection when coated with spiro-MeOTAD.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hao-Sheng Lin, Takahiro Doba, Wataru Sato, Yutaka Matsuo, Rui Shang, Eiichi Nakamura
Summary: Polytriarylamine, a popular hole-transporting material in solar cells, has suboptimal conductivity and recombination at the interface. By inserting a bithiophene unit between two triarylamine units, the conjugation and performance of the material are improved, resulting in high efficiency solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Physics, Applied
Hao-Sheng Lin, Riku Hatomoto, Daisuke Miyata, Miftakhul Huda, Il Jeon, Satoru Hashimoto, Takeshi Hashimoto, Yutaka Matsuo
Summary: This study demonstrates the application of wet-processed SWCNT films prepared using scalable eDIPS technology in high-performance organic solar cells. The use of acid dopants improves the conductivity and interfacial morphology of the SWCNT films, resulting in enhanced PCE efficiency.
APPLIED PHYSICS EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Hiromasa Shibuya, Yeong Suk Choi, Taejin Choi, Sungyoung Yun, Juhee Moon, Yutaka Matsuo
Summary: In this study, we investigated the thermal stability and UV-Vis absorption patterns of [60]fullerene derivatives with different substituents. The introduction of sterically bulky groups lowered the vacuum deposition temperature and prevented aggregation among neighboring [60]fullerenes. This concept could contribute to expanding the use of evaporable [60]fullerene derivatives in organic thin-film electronics research fields.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Physics, Applied
Hao-Sheng Lin, Daisuke Miyata, Mizuki Yagisawa, Miftakhul Huda, Satoru Hashimoto, Takeshi Hashimoto, Yutaka Matsuo
Summary: This letter investigates the enhancement mechanism of PEDOT:PSS by sc-SWCNTs in OSCs, revealing its significant improvements in energy level, hole-transporting mobility, and surface morphology. OSCs utilizing sc-SWCNTs-enhanced PEDOT:PSS with larger diameters achieve the highest efficiency of 6.63%.
APPLIED PHYSICS EXPRESS
(2022)
Article
Multidisciplinary Sciences
Keisuke Ogumi, Kohki Nagata, Yuki Takimoto, Kentaro Mishiba, Yutaka Matsuo
Summary: The report investigates the control of mechanochromism in inkjet-printed materials using alcohol-sensitive material Fluorenylidene-acridane (FA). The study demonstrates that FA exhibits ground-state mechanochromism and its color change can be inhibited by alcohol. The research provides insights into the potential use of FA in inkjet printing.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Shogo Fujiki, Takumi Takada, Shota Nagasawa, Hiroshi Okada, Yusuke Sasano, Eunsang Kwon, Yutaka Matsuo, Yoshiharu Iwabuchi
Summary: A versatile method is described for chemically modifying a lithium-ion endohedral fullerene (Li+@C-60) to connect various small molecules. The designed dieneazide linker enables easy connection of Li+@C-60 with small molecules bearing a terminal alkyne via Huisgen annulation and a subsequent Diels-Alder reaction. This strategy significantly expands the diversity of small molecules that can be attached by Li+@C-60.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Bo-Wen Zhang, Hao-Sheng Lin, Xi-Yang Qiu, Qing-Jun Shui, Yong-Jia Zheng, Mohamad Almesfer, Esko I. Kauppinen, Yutaka Matsuo, Shigeo Maruyama
Summary: Poly(triarylamine) (PTAA)-wrapped single-walled carbon nanotubes (SWCNTs) served as both an efficient hole-transporting layer and electrode in perovskite solar cells (PSCs). The dopant-free PTAA used in this dual-role SWCNTs electrode resulted in a well-matched energy level, increased hole-transporting mobility, and hydrophobicity, leading to improved efficiency and stability compared to reference standards using LiTFSI-doped Spiro-OMeTAD. This dopant-free PTAA-applied SWCNTs electrode not only enables efficient utilization of SWCNTs electrodes in PSCs, but also reveals the mechanism of interaction between the hole-transporting layer and SWCNTs.
Article
Physics, Applied
Kento Yokoyama, Hao-Sheng Lin, Qing-Jun Shui, Xiaoyang Wang, Nagahiro Saito, Yutaka Matsuo
Summary: This paper introduces a graphene-based interfacial layer material, cationic nitrogen-doped graphene (CNG), and evaluates its performance on inverted perovskite solar cells. The device with a CNG interfacial layer achieved a power conversion efficiency of 13.5%, higher than a state-of-the-art reference using bathocuproine interfacial layer. Mechanistic studies showed that the CNG interfacial layer can efficiently collect electrons, improve conductivity, and smooth out the interface contact to enhance the performance of the inverted perovskite solar cells. Furthermore, the unencapsulated CNG-applied device demonstrated good long-term stability, with 96% efficiency retained over 1000 hours in a nitrogen atmosphere at room temperature.
APPLIED PHYSICS EXPRESS
(2023)
Article
Chemistry, Multidisciplinary
Qing-Jun Shui, Shiqi Shan, Yong-Chang Zhai, Shinobu Aoyagi, Seiichiro Izawa, Miftakhul Huda, Chu-Yang Yu, Lijian Zuo, Hongzheng Chen, Hao-Sheng Lin, Yutaka Matsuo
Summary: Fullerene indanones (FIDOs), a series of evaporable fullerene derivatives, were developed as electron-transporting materials in inverted perovskite solar cells. The FIDOs exhibited high power conversion efficiency and long-term storage stability. By manipulating the steric bulk of the functional groups, the state of the organic film could be controlled. FIDO-based IPSC devices showed exceptional stability compared to the reference devices.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Hiroshi Ueno, Daiki Kitabatake, Hao-Sheng Lin, Yue Ma, Il Jeon, Seiichiro Izawa, Masahiro Hiramoto, Fuminori Misaizu, Shigeo Maruyama, Yutaka Matsuo
Summary: Li@PCBM, the first neutral Li@C-60 derivative, has been synthesized and exhibits a monomer-dimer equilibrium in solution but predominantly exists as a monomer in the PCBM matrix. When fully dispersed, Li@PCBM can n-dope the surrounding empty PCBM, raising the Fermi level by 0.13 eV compared to undoped PCBM films, making it an effective ETL material for PSCs.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Keisuke Ogumi, Kohki Nagata, Yuki Takimoto, Kentaro Mishiba, Yutaka Matsuo
Summary: This study investigates the properties and color change mechanisms of mechanochromic materials through experiments and computational studies. The results show that fluorenylidene-acridane films exhibit a linear mechanical pressure response and high spatial resolution. The study also demonstrates the instant color change back to yellow upon contact with ethanol using a polyvinyl alcohol sheet and molded plastics containing fluorenylidene-acridane.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
