Article
Chemistry, Multidisciplinary
Linnea Lindh, Olga Gordivska, Samuel Persson, Hannes Michaels, Hao Fan, Pavel Chabera, Nils W. Rosemann, Arvind Kumar Gupta, Iacopo Benesperi, Jens Uhlig, Om Prakash, Esmaeil Sheibani, Kasper S. Kjaer, Gerrit Boschloo, Arkady Yartsev, Marina Freitag, Reiner Lomoth, Petter Persson, Kenneth Warnmark
Summary: The study successfully improved the power conversion efficiency of dye-sensitized solar cells by designing and synthesizing new photosensitizers. Prototype DSSCs using the new Fe NHC photosensitizers showed promising results, with the addition of a co-sensitizer aiding in efficiency improvement.
Article
Chemistry, Applied
Haoran Zhou, Jung-Min Ji, Hwan Kyu Kim
Summary: Two porphyrin-based sensitizers, SGT-028 and SGT-029, were designed and synthesized via acceptor engineering for application in dye-sensitized solar cells (DSSCs). Despite similar absorption range and energy band gap to the reference dye SGT-021, SGT-029 achieved a higher power conversion efficiency (PCE) of 10.5% compared to SGT-028 with 9.1%, but was inferior to the benchmark porphyrin sensitizer SGT-021 (12.7%).
Article
Multidisciplinary Sciences
Mohamed R. Elmorsy, Fatma H. Abdelhamed, Safa A. Badawy, Ehab Abdel-Latif, Ayman A. Abdel-Shafi, Mohamed A. Ismail
Summary: This study reports on the synthesis and characterization of six novel 2,2'-bithiophene-based organic compounds that can serve as co-sensitizers for dye-sensitized solar cells based on TiO2. The compounds were designed to enhance the performance of metal-based N3, and absorption and fluorescence measurements confirmed their chemical structures. The co-sensitizer 5a exhibited the longest absorption and emission wavelengths, indicating the impact of the para methoxy group. The performance of the co-sensitizers mixed with N3 was better than N3 alone, with improvements in short current density and open circuit voltage. Electrochemical impedance spectroscopy revealed the charge transfer resistance at the TiO2/dye/electrolyte interface, and theoretical calculations based on density functional theory supported the experimental findings. These results suggest that the compounds have great potential as efficient co-sensitizers for DSSCs.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Juganta K. Roy, Ravinder Kaur, Andrew Daniel, Alexandra Baumann, Qing Li, Jared H. Delcamp, Jerzy Leszczynski
Summary: Accessing longer-wavelength photons is crucial for dye-sensitized solar cells (DSSCs). In this study, five new metal-free dyes were characterized theoretically, and the results showed that replacing certain building blocks could improve the performance of DSSCs. The findings provide important guidance for the synthesis of long-wavelength absorbing materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Applied
Fengsheng Ge, Fang Xu, Kun Gong, Dongzhi Liu, Wei Li, Lichang Wang, Xueqin Zhou
Summary: The design and synthesis of two novel D-A dyes cTPAPh-NO2 and cTPABT-PyCN2 were reported, and their photophysical and electrochemical properties were investigated. The attachment of carboxyl groups reduced the light harvesting and intramolecular charge separation ability of cTPAPh-NO2. In contrast, cTPABT-PyCN2 exhibited weak fluorescence and efficient intramolecular charge separation characteristics. These dyes showed promising potential as p-type sensitizers with effective charge separation characteristics in dye-sensitized solar cells.
Article
Chemistry, Multidisciplinary
Kalyani Chordiya, Md Ehesan Ali, Mousumi U. Kahaly
Summary: This study investigates the mechanism and influencing factors of intramolecular charge transfer in dye molecules by analyzing their electronic properties and structural parameters. The results reveal that structural modifications can promote efficient charge transfer within the molecule.
Review
Materials Science, Multidisciplinary
Audun Formo Buene, David Moe Almenningen
Summary: Despite their attractiveness, phenothiazine dyes are unlikely to be the main sensitizers of high-efficiency DSSCs in the future, due to low oxidation potentials, low extinction coefficients, and inherent limitations restricting the further optimization of their photophysical properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Marco Giordano, Giorgio Volpi, Matteo Bonomo, Paolo Mariani, Claudio Garino, Guido Viscardi
Summary: Three aromatic diimine ligands and their corresponding homoleptic copper(I) and copper(II) complexes were synthesized and characterized in this study. The nature of the ligand significantly influenced the photophysical and electrochemical properties of the complexes, and the coordination geometry of the complexes was affected by substituting pendant methyl groups with methoxy. The ligand was found to play a crucial role in the performance of the devices, with methoxy-substituted derivatives exhibiting unexpectedly high open circuit voltage after severe ligand exchange with tert-butylpyridine.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Coatings & Films
Philipp G. Gruetzmacher, Michael Schranz, Chia-Jui Hsu, Johannes Bernardi, Andreas Steiger-Thirsfeld, Lars Hensgen, Manel Rodriguez Ripoll, Carsten Gachot
Summary: The power conversion efficiency (PCE) of PEB and PUB as sensitizers of dye-sensitized solar cells is investigated using first-principles calculations. Different adsorption models are constructed for PEB/PUB on the TiO2 surface, and their geometrical configurations and electronic properties are optimized. The obtained PCEs confirm the credibility of the current method and predict that PUB and PEB are promising candidate sensitizers for dye-sensitized solar cells.
SURFACE & COATINGS TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Koteshwar Devulapally, Govind Reddy, Seelam Prasanthkumar, Anooja Jagadeesh, Suraj Soman, Lingamallu Giribabu
Summary: In this study, two new donor-pi-acceptor (D-pi-A) concept based porphyrin sensitizers were designed and synthesized, showing good performance in sensitizing nanocrystalline TiO2. The optimized device studies demonstrated power conversion efficiencies of 1.86% and 1.37% for LG22 and LG23 dyes, respectively, using I-/I-3(-) liquid redox shuttle. Various characterization techniques were employed to understand the electron transfer properties and performance limiting processes in these novel porphyrin sensitizers.
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
(2021)
Article
Chemistry, Multidisciplinary
Thibaut Baron, Waad Naim, Ilias Nikolinakos, Baptiste Andrin, Yann Pellegrin, Denis Jacquemin, Stefan Haacke, Frederic Sauvage, Fabrice Odobel
Summary: The development of transparent solar cells offers a new way to utilize windows as solar panels for electricity generation. This study introduces a new family of NIR-sensitizers based on pyrrolopyrrole cyanine dyes, which enables the development of fully transparent and colorless dye-sensitized solar cells with a record efficiency of 2.5%.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Jiazhi Zou, Yuqing Wang, Glib Baryshnikov, Jiaxin Luo, Xueyan Wang, Hans Agren, Chengjie Li, Yongshu Xie
Summary: To develop efficient dye-sensitized solar cells, a new class of dye called concerted companion dye (CC dye) has been reported. These dyes exhibit panchromatic absorption and excellent photovoltaic performance. By wrapping the dye molecules with alkoxy chains of various lengths, the antiaggregation ability of the dyes is further enhanced, leading to improved photovoltaic performance. This research provides a new approach for constructing high-performance dye-sensitized solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Feng-Lin Xing, Zhi-Hong Zhang, Chuan-Lu Yang, Mei-Shan Wang, Xiao-Guang Ma
Summary: The power conversion efficiency of PEB and PUB as sensitizers in dye-sensitized solar cells was investigated using first-principles calculations. The results showed high PCE values for PUB and PEB, indicating their potential as candidate sensitizers for dye-sensitized solar cells.
Article
Chemistry, Inorganic & Nuclear
Yu Wu, Jia-Cheng Liu, Ren-Zhi Li, Cheng-Gang Ci
Summary: Four different metal atom dyes (MP) were designed and synthesized for dye-sensitized solar cells, with MP-ZnPA assembly showing improved photocurrent due to enhanced light-harvesting ability. However, the presence of dye aggregation hindered the improvement of photovoltages. AgP-ZnPA and ZnP-ZnPA demonstrated superior photovoltaic behavior, with the three-layer self-assembled solar cell showing significantly reduced efficiency, highlighting double-layer self-assembly as an effective strategy for enhancing performance in self-assembly supramolecular solar cells.
Article
Chemistry, Physical
Aaditya Manjanath, Chou-Hsun Yang, Karl Kue, Chun- Wang, Gil C. Claudio, Chao-Ping Hsu
Summary: Singlet fission (SF) is a process where a singlet exciton is split into a pair of triplet excitons, which can enhance the efficiency of solar cells. In this study, we propose a new molecular design concept to enhance the coupling in well-stacked pi-conjugated molecule pairs by involving triplet states of different origins, such as those with nonbonding n orbitals. Our results demonstrate significant enhancement in the coupling and provide new insights for better SF materials.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2022)
Article
Nanoscience & Nanotechnology
Bryan Po-Wen Chen, Ruei-Yu He, Hung-Ming Chien, Chi-Chang Lee, Hsiao-Han Chuang, Chao-Ping Hsu, Jerry C. C. Chan, Joseph Jen-Tse Huang
Summary: This study reports a method of incorporating hydrazones into amyloidogenic peptides by forming photoisomerizable hydrazones without the need for external reductants or high-power irradiation. Super-resolution microscopy was used to distinguish polymorphic nanoscopic structures of the hydrazone-incorporated peptides in vitro and in live cells.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Shu-Hao Yeh, Weitao Yang, Chao-Ping Hsu
Summary: The article introduces an improved method for thermally assisted-occupation density functional theory (TAO-DFT), namely rTAO and rTAO-1. These methods can simulate systems with strong static correlation in a simpler and more efficient way, and can capture accurate static correlation profiles.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Ching-Chin Chen, Vinh Son Nguyen, Hsiao-Chi Chiu, Yan-Da Chen, Tzu-Chien Wei, Chen-Yu Yeh
Summary: New anthracene-bridged organic dyes CXC12 and CXC22 are designed and synthesized for high-efficiency dye-sensitized solar cells (DSSCs) under dim light. The addition of anthracene-acetylene group in CXC dyes extends the pi-conjugation of the molecules, resulting in improved absorption and molar extinction coefficient. Among the three anthracene-based dyes, CXC22 shows the most appropriate molecular structure for light harvesting and balancing dye loading and molecular aggregation, achieving a remarkable power conversion efficiency of 37.07% under dim-light conditions.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chi-Lun Mai, Qiu Xiong, Xiong Li, Jiann-Yeu Chen, Jung-Yao Chen, Ching-Chin Chen, Jianbin Xu, Chunming Liu, Chen-Yu Yeh, Peng Gao
Summary: A new symmetric porphyrin MDA4 has been synthesized as a hole-transporting material for perovskite solar cells, showing impressive power-conversion efficiency and thermal stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Vinh Son Nguyen, Tzu-Sen Su, Ching-Chin Chen, Chen-Yu Yeh, Tzu-Chien Wei
Summary: This study investigates the influence of different counter electrodes (CEs) on the performance of copper complex-mediated dye-sensitized solar cells (DSSCs). The dip-coating method using polyvinylpyrrolidone capped Pt (PVP-Pt) and polyvinyl alcohol capped Pt (PVA-Pt) forms better uniformity of Pt nanoparticles on CE surface and uses less Pt consumption compared to the traditional thermalization method (TR-Pt_10). PVA-Pt CE exhibits competitive catalytic activity with PEDOT CE and superior electrochemical stability. The PCE of PVA-Pt CE-based device is higher than those using PEDOT, TR-Pt_10, and PVP-Pt.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Multidisciplinary
Erickson Fajiculay, Chao-Ping Hsu
Summary: Noise in biochemical networks is of importance in biological problems, and understanding noise dynamics through network structure analysis is desirable. This study developed a noise localization theory that identifies buffering structures and provides insights into noise flow under non-steady-state conditions.
Article
Chemistry, Multidisciplinary
Erickson Fajiculay, Chao-Ping Hsu
Summary: One of the primary interests in understanding biological systems is to study the interaction between noise and cellular regulation. This study explores steady-state perturbations of monomolecular closed systems and ways to estimate the response of noise as (co)variances. The findings provide potential applications in model discrimination, network-wide response scanning, and reconstruction.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Ching-Chin Chen, Yu-Hsuan Chen, Vinh Son Nguyen, Sheng-Yang Chen, Meng-Chen Tsai, Jia-Sian Chen, Sing-Yu Lin, Tzu-Chien Wei, Chen-Yu Yeh
Summary: Double fence porphyrins are a new type of dye that can improve the efficiency of dye-sensitized solar cells. The newly synthesized double fence porphyrin YS7 exhibits a higher efficiency in DSSCs, providing a new molecular design strategy for high-efficiency porphyrin dyes.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Chintam Hanmandlu, Rohan Paste, Hsinhan Tsai, Shyam Narayan Singh Yadav, Kuan-Wen Lai, Yen-Yu Wang, Chandra Shekar Gantepogu, Chen-Hung Hou, Jing-Jong Shyue, Yu-Jung Lu, Tushar Sanjay Jadhav, Jian-Ming Liao, Hsien-Hsin Chou, Hui Qi Wong, Chao-Sung Lai, Dibyajyoti Ghosh, Sergei Tretiak, Ta-Jen Yen, Hung-Ju Yen, Chih-Wei Chu
Summary: This study used a holistic interface strategy to enhance the efficiency and stability of perovskite solar cells by decreasing the number of interfacial defect states. The researchers utilized three-dimensional triphenylamine-based nanographene precursors to form a bridge between the perovskite film and the hole transport layer, resulting in improved performance characteristics.
Article
Chemistry, Physical
Bo-Yu Han, Tzu-Ying Pan, Yi-Chen Wu, Jiann T. Lin, Hsien-Hsin Chou, Chun-Ting Li
Summary: Bulky N-substituents of 4-(hexyloxy) phenyl-substituted and 4-(hexylthio)phenyl-substituted triphenylamine were successfully introduced into double-anchored phenothiazine dyes as capping moieties for metal-free organic sensitizers in dye-sensitized solar cells. The N-substituent of 4-(hexyloxy)phenyl-substituted TPA provided the best steric matching and resulted in a compact dye packing and an integrated shelter layer on the TiO2 surface. The DSSC performance achieved with this modification was higher than that of the reference N719-based and HL5-based DSSCs.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yi-Siang Wang, Chun- Wang, Chou-Hsun Yang, Chao-Ping Hsu
Summary: This work utilizes molecular dynamic simulations and machine-learning models to investigate dynamic disorder in the coupling of hole transfer. The results demonstrate that low-frequency modes dominate these dynamics, primarily resulting from intermolecular movements such as rotation and translation. Additionally, the coupling exhibits sub-Ohmic behavior in its spectral density character, with cut-off frequencies around 10(2) cm(-1).
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Dharuman Chandrasekaran, Shin-Jyun Liou, Wei-Hao Chiu, Lee-Che Lee, Kun-Mu Lee, Yi-Chen Wu, Hsien-Hsin Chou, Yuan Jay Chang, Yung-Sheng Yen
Summary: This study synthesized three D-7C-D type PAHs-based hole-transporting materials (HTMs) and demonstrated their efficiency in perovskite solar cells (PSCs). The PSC devices fabricated with one of the compounds, DC-1, achieved a highly efficient power conversion efficiency (PCE) of 18.09%, outperforming the devices based on DC-2 and DC-3, and slightly higher than those using the control material spiro-OMeTAD. These novel D-7C-D molecules show promising performance as HTMs for PSCs and contribute to the development of high-efficiency perovskite solar cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Keng-Fang Hsu, Shih-Po Su, Hsiu-Feng Lu, Ming-Ho Liu, Yuan Jay Chang, Yi-Jang Lee, Huihua Kenny Chiang, Chao-Ping Hsu, Chin-Wei Lu, Yang-Hsiang Chan
Summary: The study presents the design of NIR-II emissive semiconducting polymer dots (Pdots) incorporated with thermally activated delayed fluorescence (TADF) moieties, which exhibit emission maxima of 1064-1100 nm and fluorescence quantum yields of 0.40-1.58% in aqueous solutions. By conducting density-functional theory calculations, the researchers gain a better understanding of how the TADF units affect the molecular packing and resulting optical properties of Pdots. In vivo 3D bone imaging in mice demonstrates the promising applications of these Pdots.
Article
Plant Sciences
Ho-Wei Wu, Erickson Fajiculay, Jing-Fen Wu, Ching-Cher Sanders Yan, Chao-Ping Hsu, Shu-Hsing Wu
Summary: Upstream open reading frames (uORFs) are commonly found in eukaryotic messenger RNAs and can achieve low but precise protein production by repressing the translation efficiency of downstream coding sequences. These uORFs can buffer protein production levels in the plant circadian clock, contributing to its robust operation.
