Review
Chemistry, Physical
Michele De Bastiani, Anand S. Subbiah, Maxime Babics, Esma Ugur, Lujia Xu, Jiang Liu, Thomas G. Allen, Erkan Aydin, Stefaan De Wolf
Summary: Perovskite/silicon tandem solar cells are high-efficiency and low-cost photovoltaic devices that enhance stability and energy yield by collecting light from both the sunward and rear side.
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
Energy & Fuels
Wenjie Lin, Julie Dreon, Sihua Zhong, Vincent Paratte, Luca Antognini, Jean Cattin, Zongtao Liu, Zongcun Liang, Pingqi Gao, Hui Shen, Christophe Ballif, Mathieu Boccard
Summary: Challenges in fabricating full dopant-free bifacial silicon solar cells are discussed, with efficient devices utilizing MoO3/ITO/Ag and ZnO/LiFx/Al contacts demonstrated. The ZnO/LiFx/Al electron contacts with a thinner ZnO layer and larger contact fraction display better selectivity and lower resistance loss, leading to improved power output. Further improvements are needed to make this technology industry-relevant.
Article
Chemistry, Physical
Qi Jiang, Zhaoning Song, Rosemary C. Bramante, Paul F. Ndione, Robert Tirawat, Joseph J. Berry, Yanfa Yan, Kai Zhu
Summary: This study presents highly efficient bifacial perovskite solar cells (PSCs) based on the p-i-n architecture. A transparent conducting rear electrode was designed for optimized efficiency under various albedo illumination conditions. The bifacial PSCs achieved a bifaciality of about 91%-93% and exhibited higher energy yields and lower levelized cost of energy (LCOE) compared to their monofacial counterparts.
Article
Energy & Fuels
Odysseas Alexandros Katsikogiannis, Hesan Ziar, Olindo Isabella
Summary: The study investigates the use of agrophotovoltaic (APV) systems to simultaneously produce renewable energy and crops. Different APV topologies were analyzed under various climates, and the E-W wings topology showed the best performance in terms of both electricity generation and crop growth.
Article
Energy & Fuels
Bushra Rasheed, Asmara Safdar, Muhammad Sajid, Sara Ali, Yasar Ayaz
Summary: This paper investigates the impact of changing weather patterns on solar load assessment and reveals the shortcomings of existing solar load models in representing long-term weather variations.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Zhaoning Song, Chongwen Li, Lei Chen, Yanfa Yan
Summary: Bifacial perovskite solar cells offer the potential for higher power output and enhanced durability compared to traditional devices, thanks to the unique optoelectronic properties of perovskite material and the use of transparent conducting oxide electrodes to prevent electrode corrosion. Despite the limitations and challenges, bifacial perovskite solar cells are increasingly seen as a viable commercialization pathway for mainstream solar power generation and building-integrated PV systems. Advantages include high power output, improved device durability, and lower economic and environmental costs.
ADVANCED MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Koami Soulemane Hayibo, Aliaksei Petsiuk, Pierce Mayville, Laura Brown, Joshua M. Pearce
Summary: There has been a recent interest in accurately estimating snow losses for solar photovoltaic systems in northern latitudes. This study compares the snow losses of monofacial and bifacial systems using empirical data and image processing methods. The results show that bifacial systems perform better in clearing snow and have lower snow losses compared to monofacial systems, especially in severe winter conditions.
Review
Energy & Fuels
Muthu Vimala, Geetha Ramadas, Muthaiya Perarasi, Athikesavan Muthu Manokar, Ravishankar Sathyamurthy
Summary: Conventionally accessible silicon solar cells have drawbacks of reduced efficiency and increased fabrication costs. Bifacial solar cells, which exploit sunlight occurrence on both sides of the cell more efficiently, show potential in reducing the cost of solar energy conversion. This paper reviews recent initiatives and significant issues in enhancing the efficiency of bifacial solar cells from material sciences and chemical composition aspects.
Article
Chemistry, Physical
Daxue Du, Chao Gao, Haiyan Wang, Wenzhong Shen
Summary: This study introduces a method to calculate the current matching loss of bifacial tandem solar cells through analyzing the current characteristics of bifacial sub-cells, with verification of reliability. Energy yield and loss are predicted for the application of bifacial tandem solar cells in different latitudes, along with possible solutions for increasing yield and reducing costs. The research establishes a base for calculating and predicting the photovoltaic performance of bifacial perovskite/c-Si tandem solar cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Jilei Wang, Yimin Xuan, Likai Zheng, Yuanpei Xu, Liyou Yang
Summary: The innovative stacked mask method combined with a two-step texturing method was developed to prepare asymmetrical micro-pyramid structures on SHJ solar cells, significantly improving the light trapping effect. Research showed that a smaller bottom angle of backside pyramids led to better surface passivation quality and increased Jsc and PCE of the SHJ solar cells.
Article
Energy & Fuels
S. Ma, H. B. Tang, Z. P. Li, X. Y. Kong, W. Z. Shen
Summary: The study demonstrates that using SiOxNy films can significantly improve the performance of bifacial p-type silicon PERCs, with front-side and rear-side efficiency increasing by 0.27% and 0.26% respectively, achieving an average front-side efficiency of 23.23% and a rear-side efficiency of 17.31%.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Multidisciplinary
Jin Gi An, Huyen Tran, Dongryeol Kim, Sang Min Lee, Ahreum Lee, Seung Kyu Ahn, Jun-Sik Cho, Jihye Gwak, Taewan Kim, Inyoung Jeong, Joo Hyung Park
Summary: This study explores the potential and performance of bifacial semitransparent CuInSe2 solar cells and fabricates four-terminal bifacial tandem solar cells. The research finds that the conversion efficiency and power generation density of solar cells can be improved through optimization.
Article
Energy & Fuels
Dipendra Pokhrel, Xavier Mathew, Kamala Khanal Subedi, Aesha Patel, Adam B. Phillips, Ebin Bastola, Abasi Abudulimu, Manoj K. Jamarkattel, Suman Rijal, Abdul Quader, Jared Friedl, Zachary Zawisza, Yanfa Yan, Michael J. Heben, Randy J. Ellingson
Summary: Bifacial solar cells have the potential to maintain high energy output under unfavorable weather conditions. In this study, a solution-processed CuxCryOz back-buffer layer is demonstrated to improve carrier lifetime and increase short-circuit current and efficiency.
Article
Energy & Fuels
Adam B. Phillips, Jared D. Friedl, Philip Ottinger, Steven L. Carter, Zhaoning Song, Abasi Abudulimu, Ebin Bastola, Deng-Bing Li, Yanfa Yan, Randy J. Ellingson, Michael J. Heben
Summary: Numerical modeling is used to investigate the performance of bifacial thin film solar cells under front, back, and simultaneous illumination through both interfaces. It is found that downward band bending near the back interface is reduced under low carrier concentration conditions, but still affects minority carrier distribution at relatively high doping conditions. The power generated under bifacial illumination exceeds the sum of power from solely front or back illumination, and the performance is independent of the angle of light entering the back interface. However, under real-world albedo conditions, significant loss in frontside power generation is difficult to overcome with back illumination.
Article
Engineering, Electrical & Electronic
Zhi Xuan Tang, Yun Seng Lim, Stella Morris, Jia Liang Yi, Padraig F. Lyons, Phil C. Taylor
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2019)
Article
Energy & Fuels
Lee Cheun Hau (Alvey), Yun Seng Lim, Serena Miao San Liew
Article
Green & Sustainable Science & Technology
Yun Seng Lim, Jianhui Wong, Miao San Serena Liew, Lin Yi Ace Khaw
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2020)
Article
Optics
Nneka Obianuju Onubogu, Chang Hong Pua, Horng Sheng Lin, Abd-Rahman Faidz
Article
Chemistry, Analytical
Takuya Okazaki, Tatsuya Orii, Shin-Yinn Tan, Tomoaki Watanabe, Akira Taguchi, Faidz A. Rahman, Hideki Kuramitz
ANALYTICAL CHEMISTRY
(2020)
Article
Optics
Nneka Obianuju Onubogu, Chang Hong Pua, Abd-Rahman Faidz
Summary: An experimental study was conducted on an Erbium-doped fiber ring laser subjected to external cavity-loss modulation using a loudspeaker as the modulator. The study observed both linear and non-linear dynamical behaviors, with the laser system showing different responses based on the driving amplitude and frequency. Different control parameters, such as driving amplitude and modulation frequency, were considered, allowing for a precise analysis of the laser's non-linear features during external cavity-loss modulation.
Article
Acoustics
Ling Ling Ting, Jing Yuen Tey, Andy Chit Tan, Yeong Jin King, Faidz Abd Rahman
Summary: This paper focuses on noise reduction in acoustic leak detection and proposes an improved de-noising method along with wave dispersion for leak localization. Experimental results demonstrate that the proposed method outperforms ordinary wavelet de-noising and effectively enhances leak localization accuracy.
Article
Optics
W. S. Pang, Y. G. Shee, F. A. Rahman, F. R. M. Adikan, M. A. Mahdi
Summary: The temperature fiber sensor presented in this study utilizes second order Brillouin slow light to achieve enhanced sensitivity, inducing optical delay through interaction between modulated probe wave and first order Brillouin Stokes signal. As the temperature changes, the measured optical delay at the output changes accordingly, with a temperature slope coefficient of 1.917 ns/degrees C achieved in the second order setup, almost double that of the first order experiment.
Article
Chemistry, Analytical
Takuya Okazaki, Tatsuya Orii, Shin-Yinn Tan, Tomoaki Watanabe, Akira Taguchi, Faidz A. Rahman, Hideki Kuramitz
Summary: A potential-scanning sensing technique using an ITO-coated LPFG for refractive index detection was proposed. Controlling the electron density of the ITO electrode achieved the sensing, resulting in high resolution and sensitivity in experimental results.
ANALYTICAL LETTERS
(2022)
Article
Optics
Nneka Obianuju Onubogu, Chang Hong Pua, Abd-Rahman Faidz, William C. Rose
Summary: The behavioral response of an erbium-doped fiber laser with two different configurations (linear cavity and ring cavity) under pump modulation is analyzed numerically. The results from the numerical analysis are in good agreement with the experimental observations, showing all the linear and non-linear spectral features. The study also reveals a new dynamic behavior of the laser under certain pump modulation conditions.
Article
Computer Science, Information Systems
Wen Hao Png, Horng Sheng Lin, Chang Hong Pua, Mau Luen Tham, Faidz Abdul Rahman
Summary: The paper proposes an adaptive leak localisation system involving a remote acoustic sensor network and a multi-level analytics framework (MLAF) for piping networks. The system's performance has been evaluated on various emulated piping networks with different network topologies, showing high adaptiveness and location accuracies.
INTERNATIONAL JOURNAL OF SENSOR NETWORKS
(2021)
Article
Engineering, Mechanical
Wei-Tang Lee, Andy-Chit Tan, Jing-Yuen Tey, Faidz Abdul Rahman
JOURNAL OF THE CHINESE SOCIETY OF MECHANICAL ENGINEERS
(2020)
Proceedings Paper
Green & Sustainable Science & Technology
L. L. Ting, J. Y. Tey, A. C. Tan, Y. J. King, A. R. Faidz
INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY AND GREEN TECHNOLOGY 2018
(2019)
Proceedings Paper
Green & Sustainable Science & Technology
W. T. Lee, A. C. Tan, J. Y. Tey, F. A. Rahman
INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY AND GREEN TECHNOLOGY 2018
(2019)
Article
Green & Sustainable Science & Technology
Eu-Tjin Chok, Yun Seng Lim, Kein Huat Chua
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2019)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
