Article
Nanoscience & Nanotechnology
Yeongkwon Kang, Jung Won Yoon, Seok Woo Lee, Hyungju Ahn, Siwon Yun, Jongchul Lim, Jihoon Lee, Dong Wook Chang, Hyosung Choi, Bong-Gi Kim
Summary: To investigate the effect of miscibility between conjugated polymers (CPs) and Y6 on the morphology of bulk-heterojunction (BHJ) structures, three different CPs with similar chemical structures but varying miscibility with Y6 were studied. The interface morphology and interlocked dimensions were compared quantitatively using a square-wave model after selectively removing Y6 from the CP/Y6 blend films. It was found that as CP-Y6 miscibility increases, a higher intermixed interface is formed, while a decrease in miscibility leads to a decrease in the dimensions formed by phase separation and an increase in width.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Cankun Zhang, Yuzhe Zhang, Zhiye Wang, Yuming Su, Zhixiang Wei, Jianhui Hou, Shan He, Kaifeng Wu, Chang He, Jianqi Zhang, Cheng Wang
Summary: The bulk heterojunction in organic solar cells is where charge separation and recombination occur, with molecular orientation playing a key role in solar cell efficiency. Polarization-selective transient absorption spectroscopy reveals differences in molecular orientations between different solar cell systems, providing important insights into key photophysical steps in energy conversion.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Olivier J. J. Ronsin, Jens Harting
Summary: This study uses a coupled phase-field-fluid mechanics framework to simulate the formation process of bulk-heterojunction (BHJ) morphology in organic solar cells. The simulation results match well with experimental results and can be used to optimize the cell's performance and develop physical design rules for ink formulation and processing conditions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hyunjung Jin, Kyuyeon Kim, Sungmin Park, JinHyeong Rhee, Hyungju Ahn, Dong Jun Kim, Kyeongmin Kim, Jun Hong Noh, Taek-Soo Kim, Eul-Yong Shin, Hae Jung Son
Summary: Recyclable conjugated polymers play a crucial role in eco-friendly electronics due to their solution processability and flexibility. A recyclable conjugated polymer, PY-TIP, has been developed, in which a key monomer is extracted and reused for synthesizing new conjugated polymers. A one-shot preparation method using the recycled monomer has been demonstrated for the first time, resulting in a bulk-heterojunction (BHJ) film with optimal nanoscale morphology for efficient charge generation and transport. Solar cells prepared with the BHJ film exhibit a higher efficiency of 13.08% and improved thermal and mechanical stability compared to those based on small molecular acceptors. These results highlight the potential of solid-state polymer synthesis from recycled monomers and the importance of improving both stability and photovoltaic performance in BHJ films. PY-TIP serves as an exemplary model for reproducing monomers and synthesizing conjugated polymers with novel properties. This work provides valuable insights for developing recyclable conjugated polymers with dynamic covalent bonds.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Emilio Palomares, Laurent Billon, Aurelien Viterisi
Summary: Crystallinity plays a significant role in organic solar cells, particularly in small molecule bulk-heterojunction structures. The crystallinity and packing of small molecules have been found to greatly influence the power conversion efficiency. This review highlights the shift towards a liquid crystalline-like packing in the history of small molecule bulk-heterojunction structures, which is associated with an increase in overall power conversion efficiency.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Kan Ding, Xiaheng Huang, Yongxi Li, Stephen R. Forrest
Summary: The study introduces a method to analyze the performance of BHJ organic photovoltaics by calculating the BQE to isolate the properties of the BHJ. It found that inserting a self-assembled monolayer in solution-processed OPVs can significantly improve the device stability, specifically in cases where degradation is primarily due to the ZnO layer.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Song Yi Park, Chiara Labanti, Joel Luke, Yi-Chun Chin, Ji-Seon Kim
Summary: This study identifies the excellent suitability of bilayer OPVs for indoor applications, highlighting the importance of device architecture and interfacial structures for efficient indoor OPVs.
ADVANCED ENERGY MATERIALS
(2022)
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, Applied
Xia Liu, Ming Hu, Yongle Li, Xiaohong Zhao, Youdi Zhang, Yu Hu, Zhongyi Yuan, Yiwang Chen
Summary: A series of perylene diimide derivatives with near infrared absorption and different geometries were synthesized by introducing PTAD and BuTAD. These compounds exhibit broad absorption, high thermal stability, and appropriate solubility, and can be used to construct organic solar cells with high power conversion efficiency when blended with PM6 polymer donor.
Review
Chemistry, Multidisciplinary
Dong Meng, Ran Zheng, Yepin Zhao, Elizabeth Zhang, Letian Dou, Yang Yang
Summary: Near-infrared (NIR)-absorbing organic semiconductors have revolutionized organic photovoltaic (OPV) research, enabling advancements in materials synthesis, device architecture, and efficiency improvement. This review categorizes NIR photovoltaic materials based on their absorption window and discusses the structure-property relationships to meet diverse application requirements. The potential of NIR materials in transparent OPVs, tandem OPVs, and photodetectors is highlighted, along with a discussion on the challenges and future directions for novel NIR materials in next-generation organic photovoltaics.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ling Hong, Huifeng Yao, Yong Cui, Pengqing Bi, Tao Zhang, Yongxin Cheng, Yunfei Zu, Jinzhao Qin, Runnan Yu, Ziyi Ge, Jianhui Hou
Summary: Establishing an ideal architecture with selective carrier transport and suppressed recombination is crucial for improving photovoltaic efficiency in organic solar cells (OSCs). By tailoring a hybrid planar/bulk structure, highly efficient OSCs with reduced energy losses were fabricated. The study highlights the potential of precisely regulating the structure of donor:acceptor heterojunction to further enhance the efficiencies of OSCs.
ADVANCED MATERIALS
(2021)
Article
Engineering, Environmental
Minwoo Nam, Youngrak Park, Chihyung Lee, Gunhee Kim, Felipe A. Larrain, Canek Fuente-Hernandez, Doo-Hyun Ko, Bernard Kippelen
Summary: The commercial viability of organic photovoltaics (OPVs) can be improved by simplifying device geometry and fabrication complexity. By using solution-based p-type electrical doping, efficient single-layer OPVs can be realized. Post-process immersion in a 12-molybdophosphoric acid hydrate (PMA) solution reduces trap density and charge recombination without changing the BHJ morphology, enabling the fabrication of high-performance single-layer OPVs with economic top electrode metals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Hao-Wen Cheng, Anisha Mohapatra, Yi-Ming Chang, Chuang-Yi Liao, Yu-Tang Hsiao, Chung-Hao Chen, Yu-Che Lin, Shih-Yu Huang, Bin Chang, Yang Yang, Chih-Wei Chu, Kung-Hwa Wei
Summary: This study focused on preparing organic photovoltaics (OPVs) with double bulk heterojunction (BHJ) structures, incorporating two small-molecule acceptors with concentration gradients to enhance charge transportation and power conversion efficiencies. The results showed that devices with the double-BHJ structure had higher PCEs compared to those with single-BHJ structures, highlighting the effectiveness of combining two BHJ structures with a concentration gradient of small-molecule acceptors for improving OPV performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
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)
Article
Chemistry, Physical
Gaoyuan Yang, Yibo Tu, Jingchuan Ye, Ruochuan Liu, Yue Zang, Lijian Zhang, Yu Wang, Guodong Li, Qin Zhou, Liang Chu, Wensheng Yan
Summary: Perovskite solar cells (PSCs) are the most promising candidate for next-generation photovoltaics. Manipulating the hot carriers has the potential to achieve ultrahigh-efficiency solar cells. However, the carrier dynamics behavior in the femtosecond time scale is difficult to be detected, and this challenge is effectively addressed by femtosecond transient absorption techniques.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Julio Rivera-Taco, Rigoberto Castro-Beltran, Jose-Luis Maldonado, Jonathan Alvarez-Martinez, Denisse Barreiro-Arguelles, Jorge A. Gaspar, Gerardo Gutierrez-Juarez
Summary: By introducing Ag-NPs into the PEDOT:PSS layer, the power conversion efficiency of organic solar cells was successfully improved. The incorporation of Ag-NPs increased light absorption and enhanced performance through localized surface plasmonic resonance effect.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Energy & Fuels
Yaily Fernandez-Arteaga, Jose-Luis Maldonado, Juan Nicasio-Collazo, Marco-Antonio Meneses-Nava, Mario Rodriguez, Oracio Barbosa-Garcia, Uriel Sierra, Salvador Fernandez, Bernardo Antonio Frontana-Uribe
Summary: A novel bilayer anode material composed of a graphene derivative and PH1000 polymer is proposed as a sustainable alternative to ITO in the manufacture of organic solar cells. The new material exhibits good performance characteristics such as low cost and ease of processing, showing potential for replacing ITO as an anode material.
Article
Materials Science, Multidisciplinary
Irving Caballero-Quintana, Julio Rivera-Taco, Cecile Barthes, Juan Nicasio-Collazo, Gabriel Ramos-Ortiz, Jose-Luis Maldonado, Valerie Maraval, Remi Chauvin
Summary: Three carbo-mer derivatives with different electro-active groups were studied for their electrical properties and self-assembly behavior, revealing structure-specific organization on the substrate. Work function and hole mobility values were measured, with potential applications in replacing PEDOT:PSS in organic solar cells explored.
Article
Chemistry, Inorganic & Nuclear
Ariana Leon-Negrete, Rodrigo Morales-Cueto, Marisol Guizado-Rodriguez, Mario Rodriguez, Arturo Gonzalez-Hernandez, Victor Barba
Summary: The one-pot reaction synthesized tricyclic boronate species with a pi delocalized structural skeleton, showing photophysical properties and colorimetric properties in different solvents. Substitution of hydrogen atom by chlorine atom in chlorophenol derivative compounds stabilized HOMO and LUMO levels, resulting in decreased transition energy values. Compounds with extended pi conjugation, such as pyrene and anthracene derivatives, exhibited smaller band gap energy compared to phenyl derivatives.
Article
Energy & Fuels
Jonatan Rodriguez-Rea, Marisol Guizado-Rodriguez, Jose-Luis Maldonado, Gabriel Ramos-Ortiz, Jose Ulises Reveles, Carlos Silva, Victor Barba, Esmeralda Monserrat Saucedo-Salazar, Maria Teresa Rodriguez Hernandez
Summary: A series of PFDPP copolymers based on fluorene and diketopyrrolopyrrole monomers were successfully synthesized via direct arylation polycondensation, with the optimal catalyst amount being 12% resulting in a high yield of 81.5% and high molecular weight. These copolymers exhibit distinctive donor-acceptor structure, good fluorescence performance, and relatively high two-photon absorption cross-section.
Article
Chemistry, Physical
Andres Castro-Chacon, Alejandra Castro-Carranza, Olivia Amargos-Reyes, Jose-Luis Maldonado, Orlando Hernandez-Cristobal, David Guzman-Caballero, Israel Mejia, Aldo Vazquez, Juergen Gutowski, Jairo C. Nolasco
Summary: A different approach to study the open-circuit voltage (V-OC) tuning effect in ternary organic solar cells is proposed in this work. The experiment shows that increasing the concentration of the third component leads to an increase in the V-OC of the devices.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Polymer Science
S. Garcia-Carvajal, H. Palestina-Landa, M. E. Nicho, M. C. Arenas-Arrocena, J. L. Maldonado, D. Hernandez-Martinez, J. Santos-Cruz, P. Altuzar-Coello
Summary: Poly(3-hexylthiophene-2,5-diyl)/iron (II) disulfide ((P3HT)/FeS2) composites were synthesized by in-situ Grignard metathesis, and the effects of FeS2 incorporation in P3HT on its physicochemical properties were investigated. The incorporation of FeS2 increased the charge storage and grain size of P3HT, and modified the oxidation potential of RR-P3HT. Furthermore, the addition of FeS2 in the active layer of hybrid solar cells improved the efficiency of the photovoltaic devices.
Article
Materials Science, Multidisciplinary
A. Vazquez, A. Castro-Carranza, M. Rodriguez, J. L. Maldonado, A. Castro-Chacon, L. Garcia-Gonzalez, J. Hernandez-Torres, J. Martinez-Castillo, L. Zamora-Peredo, J. Gutowski, J. C. Nolasco
Summary: In this study, a new hybrid organic-inorganic ternary solar cell structure using a novel boron compound is proposed. The performance of the device is investigated with different combinations of donor polymers and boron compounds. The highest efficiency of 11.7% is achieved with a ternary solar cell consisting of PTB7 and a borinate with a bandgap of 1.66 eV and a medium trap energy depth of 0.95 eV above the HOMO level.
Article
Materials Science, Multidisciplinary
Jonatan Rodriguez-Rea, Marisol Guizado-Rodriguez, Jose-Luis Maldonado, Gabriel Ramos-Ortiz, J. Ulises Reveles, Carlos Silva, Victor Barba, Esmeralda M. Saucedo-Salazar, Maria Teresa Rodriguez Hernandez
Summary: A range of D-A oligomers based on TT, BTT, and DPP were synthesized using eco-friendly direct arylation polymerization. These oligomers exhibited notable properties in terms of infrared photoluminescence and optical nonlinear absorption. The dynamics of excited states in these oligomers were studied in solution, nanoparticles, and solid films. Additionally, the application of a BTT derivative in ternary organic solar cells resulted in an improvement in conversion efficiency.
Article
Engineering, Electrical & Electronic
Alvaro Guerra-Him, Yaily Fernandez-Arteaga, Jose-Luis Maldonado, Maiby Valle-Orta, Uriel Sierra, Salvador Fernandez, Bernardo Antonio Frontana-Uribe
Summary: This study presents a fabrication method for a low-cost and semitransparent three-layer graphene electrode. The electrode is made from an easily processable graphene derivative and the conductive polymer PH1000. Raman spectroscopy and theoretical calculations confirm the multilayer structure of the graphene derivative film, with an estimated 7 layers. Experimental measurements determine a thickness of approximately 5 nm for the film. The alternative three-layer graphene electrode exhibits a high transmittance of about 78% at 550 nm and a low electrical resistance of about 88 ohm/sq. These results show promising potential for the graphene derivative electrode in photovoltaic devices and other applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Review
Chemistry, Physical
Arelis Ledesma-Juarez, Mario Rodriguez, Marisol Guizado-Rodriguez, Arian Espinosa-Roa, J. Pablo Garcia-Merinos, Jose-Luis Maldonado
Summary: Two photovoltaic materials based on isoindigo (PFI) or diketopyrrolopyrrol (PFDPPT-A) and fluorene connected by thiophenes were designed and synthesized as electro-donors to obtain -(D-π-A) n polymers. Low-cost methodology was promoted by using the direct arylation (DA) reaction as a polymerization process for the synthesis of these photovoltaic materials. The molecular structure of the copolymers was established by IR, H 1 -NMR experiments, and determination of molecular weight. The electronic architecture of PFI and PFDPPT-A was estimated by theoretical study and confirmed by absorption spectroscopy and electrochemical measurements, confirming the intramolecular charge transfer. Evaluating the effect of n-bridge elongation on photovoltaic responses, a comparison of energy levels and optical features of polymers with similar structures was developed. The photovoltaic performance of PFI and PFDPPT-A was evaluated in organic solar cells (OSCs) using the BHJ approach and devices were fabricated under regular atmosphere conditions, showing improved photovoltaic character with the addition of thiophene ring, with PFI-based OSCs displaying a high Voc value of 1.05 V compared to previous isoindigo derivatives reports.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Engineering, Electrical & Electronic
Jonatan Rodriguez-Rea, Marisol Guizado-Rodriguez, Julio C. Carrillo-Sendejas, Jose-Luis Maldonado
Summary: In this study, two types of ternary organic solar cells were developed by adding a donor-acceptor polymer called PFDPP-1 as a second electro-donor component. The addition of PFDPP-1 significantly improved the power conversion efficiency and short circuit current density, leading to enhanced overall photovoltaic performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
