Article
Chemistry, Physical
Changshun Chen, Chenxin Ran, Chunyu Guo, Qing Yao, Jinpei Wang, Tingting Niu, Deli Li, Lingfeng Chao, Yingdong Xia, Yonghua Chen
Summary: This study introduces ionic liquid methylamine propionate (MAPa) as a co-solvent in the screen-printing of perovskite solar cells, solving the issue of methylamine acetate (MAAc) molecule escape. MAPa improves the filling and vertical growth of perovskite crystals, enhancing the crystalline quality and charge transport efficiency of the screen-printed film.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yabin Ma, Xinyi Du, Ran Chen, Lu Zhang, Zhongwei An, Alex K. -Y. Jen, Jiaxue You, Shengzhong (Frank) Liu
Summary: This article presents the development of an in situ laser scanning confocal polarized microscopy to observe nucleation and growth of perovskite crystal clusters. It is found that enhanced interactions by a liquid crystal with perovskite form a new intermediate complex that induces diffusion-controlled growth. The optimized perovskite films with enhanced crystallographic and optical characteristics are applied in solar cells to achieve a champion efficiency of 24.53% with excellent stability.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Toka Hatem, Zahraa Ismail, Maryam G. Elmahgary, Rami Ghannam, Mohamed A. Ahmed, Sameh O. Abdellatif
Summary: The effectiveness of mesoporous TiO2 layer with varied AgVO3 doping in DSSCs was investigated, with a 15% doping concentration found to be optimal. The DSSC achieved an output power of 19.24 mW, 6.1% power conversion efficiency, and integrated as a light harvester in an underwater sensing unit.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Multidisciplinary
Jin Peng, Qiaofeng Wu, Hongming Hou, Taotao Hu, Yue Huang, Xudong Cai, Wenjie Luo, Xin Chen, Hua Yu
Summary: The power conversion efficiency (PCE) of inverted perovskite solar cells is mainly affected by the energy level mismatch and unfavorable interfacial reaction between nickel oxide (NiOx) and organic cations of the perovskite. This study introduces interlayer engineering using dual-functional alkaline hypophosphite to address these issues. The use of alkaline hypophosphite increases the valence band maximum of NiOx, aligning the energy band of perovskite solar cells with the best energy level matching using sodium hypophosphite. Additionally, the deposition of alkaline sodium hypophosphite on NiOx reduces the proportion of Ni3+, slowing down the degradation of the perovskite layer caused by the reaction with organic cations. The treated devices show improved open-circuit voltage and retain high efficiency for a prolonged period under ambient conditions, demonstrating a feasible and effective strategy for the fabrication of efficient and air-stable inverted perovskite solar cells.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Energy & Fuels
Guodong Zhang, Yifan Zheng, Haonan Wang, Yifeng Shi, Mengjie Sun, Xiaorong Ma, Hu Wang, Qingyuan Li, Tao Li, Junsheng Yu, Yuchuan Shao
Summary: The achievement of high-performance solar cell production requires a reliable and effective perovskite crystallization approach compatible with large-scale processing. A pressure-assisted fast crystallization technique is presented, which reduces the thermal annealing time to less than 2 minutes and forms micrometer-sized vertical-monolithic perovskite crystals. The technique utilizes confined space and pressure to hinder volatilization of solvents and enhance crystal growth, resulting in rapid grain growth. The technique significantly enhances the power conversion efficiency of perovskite solar cells and shows great potential for commercialization.
Article
Chemistry, Multidisciplinary
Tobias Abzieher, Thomas Feeney, Fabian Schackmar, Yidenekachew J. Donie, Ihteaz M. Hossain, Jonas A. Schwenzer, Tim Hellmann, Thomas Mayer, Michael Powalla, Ulrich W. Paetzold
Summary: The study investigates the impact of substrate material selection on co-evaporated perovskite thin films in vacuum processes, highlighting the significant influence on film morphology and incorporation of organic compounds. A selection guide for efficient co-evaporated perovskite thin films is derived, along with a proposed basic crystallization model for co-evaporated perovskite thin films based on insights into film formation on different substrate materials.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Multidisciplinary Sciences
Esma Yenel, Mahmut Kus
Summary: In this study, we demonstrated the usability of a natural clay structure as the scaffold layer in perovskite solar cells. The efficiency, reproducibility, and stability of the cells were significantly improved by using the clay scaffold layer. The high active surface area and surface chemistry of the clay facilitated better crystallization and stability, making it a potential alternative material for commercialization of perovskite solar cells.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Minjin Kim, In-woo Choi, Seung Ju Choi, Ji Won Song, Sung-In Mo, Jeong-Ho An, Yimhyun Jo, SeJin Ahn, Seoung Kyu Ahn, Gi-Hwan Kim, Dong Suk Kim
Summary: The study found that the anions of Li-salt dopants affect the electrical properties of ETLs, with Li2CO3 doping leading to deeper conduction bands and higher efficiency in PSCs.
Article
Chemistry, Physical
Xiangyu Sun, Qiuwen Wang, Jing Wei, Hongbo Li
Summary: A novel polymer network modified mesoporous SnO2 layer is introduced to improve passivation quality while maintaining efficient charge transportation in perovskite solar cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sreeram Valsalakumar, Anurag Roy, Tapas K. Mallick, Justin Hinshelwood, Senthilarasu Sundaram
Summary: The rheological impact of the m-TiO2 layer on the PSC performance was studied. The study highlights the importance of morphological variations caused by paste viscosity and thickness on bandgap and device photovoltaic performance. The data analysis showed that the m-TiO2 paste with a viscosity of 2.85 cP and a thickness of 1 μm had a bandgap of -3.55 eV, while the higher viscous paste (3.85 cP) exhibited a slightly enhanced bandgap of -3.64 nm with a thickness greater than 1 μm. Cell performance analysis predicted a power conversion efficiency of 23.59% using the SCAPS 3.3 software-based simulation.
Article
Chemistry, Multidisciplinary
Ece Aktas, Nga Phung, Hans Koebler, Dora A. Gonzalez, Maria Mendez, Ivona Kafedjiska, Silver-Hamill Turren-Cruz, Robert Wenisch, Iver Lauermann, Antonio Abate, Emilio Palomares
Summary: The design of new molecules for self-assembled monolayers as hole-selective contacts has increased the stability of perovskite solar cells, maintaining high efficiency and demonstrating vast potential in photovoltaic applications.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Sami Ullah, Muhammad Faraz Ud Din, Jafar Khan Kasi, Ajab Khan Kasi, Karol Vegso, Mario Kotlar, Matej Micusik, Matej Jergel, Vojtech Nadazdy, Peter Siffalovic, Eva Majkova, Azhar Fakharuddin
Summary: A mesoporous tin dioxide (SnO2) electron transport layer (ETL) can enhance the performance of perovskite solar cells (PSCs). We developed a bilayer architecture of the mesoporous SnO2 ETL by anodizing a metallic tin film on a fluorine-doped tin oxide (FTO) substrate in NaOH solution. By controlling the anodization voltage and time, we achieved complete coverage of the FTO substrate. The device fabricated with this bilayer mesoporous SnO2 ETL showed a 27% improvement in power conversion efficiency compared to a single layer of mesoporous SnO2.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Aleksandra Drygala, Zbigniew Starowicz, Katarzyna Gawlinska-Necek, Malgorzata Karolus, Marek Lipinski, Pawel Jarka, Wiktor Matysiak, Eva Tillova, Peter Palcek, Tomasz Tanski
Summary: In recent years, perovskite solar cells (PSCs) have gained attention for their high power-conversion efficiency. The choice of electron transport layer (ETL) greatly affects the efficiency of PSCs. This study investigated the use of a hybrid mesoporous TiO2/ZnO ETL in PSCs and found that the addition of ZnO had a significant impact on the electrical properties. The best efficiency of 18.24% was achieved with 2 wt.% ZnO.
Article
Chemistry, Physical
Huiming Luo, Jiarong Wang, Ligang Yuan, Huiling Tang, Liqin Wu, Qingsong Jiang, Jianwei Ren, Mumin Rao, Keyou Yan
Summary: This study systematically investigated the effects of ethanol on SnO2 in PSCs and found that ethanol treatment could improve the film quality, conductivity, and stability of the perovskite layer.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Yeming Mei, Hongli Liu, Xianggao Li, Shirong Wang
Summary: Hollow TiO2 spheres were synthesized with diameters of 200 nm and shell thickness of about 30 nm by template method. The perovskite solar cells prepared on the hollow TiO2 mesoporous layer demonstrated higher efficiency and stability compared to conventional mesoporous layer devices, achieving an efficiency of 17.60%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Geochemistry & Geophysics
Yesica L. Botero, Jorge Eliecer Lopez-Rendon, Daniel Ramirez, Dioni Mabel Zapata, Franklin Jaramillo
Article
Electrochemistry
Liliana T. Lopez, Daniel Ramirez, Franklin Jaramillo, Jorge A. Calderon
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Applied
Manuel Vasquez-Montoya, Juan F. Montoya, Daniel Ramirez, Franklin Jaramillo
Summary: This study investigates the requirements for stabilizing high amounts of methylamine and formamidinium mixed cation perovskite alpha-phase using a methylamine-based precursor. The viscous-solution route is found to be the only method to incorporate high amounts of methylamine. High methylamine ratio leads to rapid crystallization and full stabilization of the active 3D alpha-phase, while low amounts of methylamine tend to result in crystallization in 1D dimensional phases.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Eduardo Gonzalez-Martinez, Annia Gomez Perez, David A. Gonzalez-Martinez, Carlos R. Diaz Aguila, Eliseo Cristiani Urbina, Daniel Uribe Ramirez, Hernani Yee-Madeira
Summary: Chitosan-coated magnetic nanoparticles were prepared using four different methodologies and their potential for DNA and Cu(II) recovery were studied. The nanoparticles produced with glutaraldehyde as a crosslinker agent showed the highest copper adsorption capacity, while the third methodology adsorbed the highest amount of DNA.
INORGANIC AND NANO-METAL CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
Daniel Ramirez, Franklin Jaramillo
Summary: In this study, fabrication and characterization of two-dimensional perovskites of the Ruddlesden-Popper's family were presented by modulating the large organic cations to increase the band gap and improve stability. An efficiency of 10.35% was achieved in PSCs with superior stability, showcasing the potential for practical applications despite reduced transport properties.
REVISTA FACULTAD DE INGENIERIA-UNIVERSIDAD DE ANTIOQUIA
(2021)
Article
Materials Science, Paper & Wood
Jonathan Javier Pabon Rojas, Bladimir Azdrubal Ramon Valencia, Francisco Javier Bolivar Osorio, Daniel Ramirez
Summary: The research aimed to produce epoxy resin biocomposites using natural fibers as reinforcement. The study found that vacuum level and fiber-matrix compatibility play important roles in determining the mechanical properties of the materials. High vacuum pressure does not necessarily lead to better performance in biocomposites, in contrast to composites made with synthetic fibers.
Article
Chemistry, Multidisciplinary
Edgar Rueda, Juan Serna, Jose Ignacio Uribe, Daniel Ramirez, Franklin Jaramillo, Jaime Osorio, Hernando Garcia
Summary: An F-scan nonlinear spectrometer was used to measure the two-photon absorption coefficient of CH3NH3PbBr3 perovskite films. The experimental data was fitted using a two-band model and irradiance saturation correction, revealing a nonlinear absorption magnitude of cm/MW.
Article
Chemistry, Physical
Vivek Babu, Mario Alejandro Mejia Escobar, Rosinda Fuentes Pineda, Mateusz Scigaj, Pierpaolo Spinelli, Konrad Wojciechowski
Summary: Multijunction all-perovskite solar cells have great potential for achieving record high power conversion efficiency values, especially when using flexible substrates that provide new commercial exploitation routes. The current state-of-the-art for flexible perovskite tandem devices is limited to small areas and non-scalable fabrication methods. This study reports the development of large-area blade-coating of wide- and narrow-bandgap perovskite photoactive layers on flexible substrates, achieving high efficiency and promising reliability.
MATERIALS TODAY ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Edwin Alexander Ramirez, Juan Pablo Velasquez, Alejandra Florez, Juan Felipe Montoya, Rafael Betancur, Franklin Jaramillo
Summary: Perovskite solar technology is focused on efficiency, stability, and processability. This study presents a method using an air knife to control solvent evaporation rate in the deposition system, resulting in perovskite films with high uniformity and crystallization. By analyzing images and using machine learning, the optimal processing conditions for achieving uniform perovskite layers are determined. The fabricated perovskite solar minimodule demonstrates high efficiency and stability, indicating the potential for mass production.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Juan Jose Patino Lopez, Manuel F. Vasquez-Montoya, Carlos A. Velasquez, Santiago Cartagena, Juan F. Montoya, Marcelo A. Martinez-Puente, Daniel Ramirez, Franklin Jaramillo
Summary: This study introduces a scalable methodology for synthesizing and depositing NiFe-layered double hydroxide (NiFe-LDH) catalysts on commercial substrates using a low-temperature spray-coating technique. The results demonstrate exceptional catalytic performance and stability, showcasing the potential of this approach for developing catalysts for industrial processes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Andres F. Gualdron-Reyes, Johan S. Rios-Nino, Angel M. Melendez, Jhonatan Rodriguez-Pereira, Mario Alejandro Mejia-Escobar, Franklin Jaramillo, Martha E. Nino-Gomez
Article
Chemistry, Physical
Yuta Fujii, Daniel Ramirez, Nataly Carolina Rosero-Navarro, Domingo Jullian, Akira Miura, Franklin Jaramillo, Kiyoharu Tadanaga
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Andres. F. Gualdron-Reyes, Angel M. Melendez, Juan Tirado, Mario Alejandro Mejia-Escobar, Franklin Jaramillo, Martha E. Nino-Gomez