keyword
https://read.qxmd.com/read/38536891/composition-optical-resonances-and-doping-of-inp-ingap-nanowires-for-tandem-solar-cells-a-micro-raman-analysis
#1
JOURNAL ARTICLE
Irene Mediavilla, Jose Luis Pura, Vanessa Giselle Hinojosa, Beatriz Galiana, Lukas Hrachowina, Magnus T Borgström, Juan Jimenez
We present a micro-Raman study of InP/InGaP tandem junction photovoltaic nanowires. These nanowires render possible InGaP compositions that cannot be made in thin films due to strain. The micro-Raman spectra acquired along the nanowires reveal the existence of compositional changes in the InGaP alloy associated with the doping sequence. The heavily Zn-doped In x Ga1- x P ( x is the In molar fraction) side of the tunnel diode is Ga rich, x = 0.25, with respect to the n-type and intrinsic segments of the top cell, which are close to the nominal composition of the NWs ( x = 0...
March 27, 2024: ACS Nano
https://read.qxmd.com/read/38535691/fabrication-of-pre-structured-substrates-and-growth-of-cigs-micro-absorbers
#2
JOURNAL ARTICLE
Marina Alves, Pedro Anacleto, Vasco Teixeira, Joaquim Carneiro, Sascha Sadewasser
Second-generation thin-film Cu(In, Ga)Se2 (CIGS) solar cells are a well-established photovoltaic technology with a record power conversion efficiency of 23.6%. However, their reliance on critical raw materials, such as In and Ga, requires new approaches to reduce the amount of critical raw materials employed. The micro-concentrator concept involves the combination of thin-film photovoltaic technology with concentrator photovoltaic technology. This approach reduces the size of the solar cell to the micrometer range and uses optical concentration to collect sunlight from a larger area, focusing it onto micro solar cells...
March 20, 2024: Nanomaterials
https://read.qxmd.com/read/38535666/optical-analysis-of-perovskite-iii-v-nanowires-interpenetrated-tandem-solar-cells
#3
JOURNAL ARTICLE
Matteo Tirrito, Phillip Manley, Christiane Becker, Eva Unger, Magnus T Borgström
Multi-junction photovoltaics approaches are being explored to mitigate thermalization losses that occur in the absorption of high-energy photons. However, the design of tandem cells faces challenges such as light reflection and parasitic absorption. Nanostructures have emerged as promising solutions due to their anti-reflection properties, which enhances light absorption. III-V nanowires (NWs) solar cells can achieve strong power conversion efficiencies, offering the advantage of potentially integrating tunnel diodes within the same fabrication process...
March 14, 2024: Nanomaterials
https://read.qxmd.com/read/38535650/fast-growth-polymer-fullerene-bulk-heterojunction-thin-films-for-efficient-organic-photovoltaics
#4
JOURNAL ARTICLE
Daewon Chung, Chandran Balamurugan, Byoungwook Park, Hyeonryul Lee, Ilhyeon Cho, Chaerin Yoon, Soyeon Park, Yong-Ryun Jo, Joonhyeon Jeon, Soonil Hong, Sooncheol Kwon
The bulk-heterojunction (BHJ) system that uses a π-conjugated polymer as an electron donor, and a fullerene derivative as an electron acceptor, is widely used in organic solar cells (OSCs) to facilitate efficient charge separation and extraction. However, the conventional BHJ system still suffers from unwanted phase segregation caused by the existence of significant differences in surface energy between the two BHJ components and the charge extraction layer during film formation. In the present work, we demonstrate a sophisticated control of fast film-growth kinetics that can be used to achieve a uniform distribution of donor and acceptor materials in the BHJ layer of OSCs without undesirable phase separation...
March 11, 2024: Nanomaterials
https://read.qxmd.com/read/38532999/detection-and-analysis-of-deteriorated-areas-in-solar-pv-modules-using-unsupervised-sensing-algorithms-and-3d-augmented-reality
#5
JOURNAL ARTICLE
Adel Oulefki, Yassine Himeur, Thaweesak Trongtirakul, Kahina Amara, Sos Agaian, Samir Benbelkacem, Mohamed Amine Guerroudji, Mohamed Zemmouri, Sahla Ferhat, Nadia Zenati, Shadi Atalla, Wathiq Mansoor
Solar Photovoltaic (PV) systems are increasingly vital for enhancing energy security worldwide. However, their efficiency and power output can be significantly reduced by hotspots and snail trails, predominantly caused by cracks in PV modules. This article introduces a novel methodology for the automatic segmentation and analysis of such anomalies, utilizing unsupervised sensing algorithms coupled with 3D Augmented Reality (AR) for enhanced visualization. The methodology outperforms existing segmentation techniques, including Weka and the Meta Segment Anything Model (SAM), as demonstrated through computer simulations...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38531655/kornblum-oxidation-reaction-induced-collective-transformation-of-lead-polyhalides-for-stable-perovskite-photovoltaics
#6
JOURNAL ARTICLE
Zhen Wang, Xuejing Cao, Heng Yang, Zhiyuan Kuang, Pinghui Yang, Guolin Zhang, Yuyang Zhang, Lei Xu, Daiji Zhang, Sunsun Li, Chunyang Miao, Nana Wang, Wei Huang, Jianpu Wang
The iodide vacancy defects generated during the perovskite crystallization process is a common issue that limits the efficiency and stability of perovskite solar cells (PSCs). Although excessive ionic iodides have been used to compensate for these vacancies, they are not effective in reducing defects through modulating the perovskite crystallization. Moreover, these iodide ions present in the perovskite films can act as interstitial defects, which are detrimental to the stability of the perovskite. Here we demonstrate an effective approach to suppress the formation of vacancy defects by manipulating the coordination chemistry of lead polyhalides during perovskite crystallization...
March 26, 2024: Advanced Materials
https://read.qxmd.com/read/38530924/novel-beta-functionalized-porphyrins-approaching-11-efficiency-for-organic-solar-cells
#7
JOURNAL ARTICLE
Yinchun Guo, Jifa Wu, Zhenkun Lin, Feng Tang, Lin Yuan, Hanping Wu, Xiaobin Peng
Porphyrins and their derivatives possess high molar extinction coefficients and strong electron-donating abilities and have been widely used in organic solar cells (OSCs). Though porphyrins can be easily functionalized at the four meso-positions and the eight β-positions, nearly all porphyrin photovoltaic materials are reported to be functionalized at the meso-positions, and the porphyrin photovoltaic materials functionalized at the β-positions are to be explored. Herein, the regioselective β-positions of a porphyrin are first brominated without using rare metal iridium catalysts, and then, after two more reactions, two antipodal β-substituted porphyrin donors EHDPP-Por and BODPP-Por are synthesized, in which four DPP (diketopyrrolopyrrole) units are connected symmetrically with acetylene at four of the β-positions, for OSCs...
March 26, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38529895/tuning-surface-defect-states-in-sputtered-titanium-oxide-electron-transport-layers-for-enhanced-stability-of-organic-photovoltaics
#8
JOURNAL ARTICLE
Mehrad Ahmadpour, Mariam Ahmad, Michela Prete, John Lundsgaard Hansen, Denys I Miakota, William Greenbank, Yunlin Jacques Zheng, Michiel Top, Thomas Ebel, Horst-Günter Rubahn, Vida Turkovic, Stela Canulescu, Nadine Witkowski, Morten Madsen
Nonfullerene acceptors (NFAs) have dramatically improved the power conversion efficiency (PCE) of organic photovoltaics (OPV) in recent years; however, their device stability currently remains a bottleneck for further technological progress. Photocatalytic decomposition of nonfullerene acceptor molecules at metal oxide electron transport layer (ETL) interfaces has in several recent reports been demonstrated as one of the main degradation mechanisms for these high-performing OPV devices. While some routes for mitigating such degradation effects have been proposed, e...
March 26, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38529666/suppressing-ion-migration-by-synergistic-engineering-of-anion-and-cation-towards-high-performance-inverted-perovskite-solar-cells-and-modules
#9
JOURNAL ARTICLE
Zuolin Zhang, Mengjia Li, Ru Li, Xinmeng Zhuang, Chenglin Wang, Xueni Shang, Dongmei He, Jiangzhao Chen, Cong Chen
Ion migration-induced intrinsic instability and large-area fabrication pose a tough challenge for the commercial deployment of perovskite photovoltaics. Herein, we develop an interface heterojunction and metal electrode stabilization strategy by suppressing ion migration via managing lead-based imperfections. After screening a series of cations and nonhalide anions, the ideal organic salt molecule dimethylammonium trifluoroacetate (DMATFA) consisting of dimethylammonium (DMA+ ) cation and trifluoroacetate (TFA- ) anion is selected to manipulate the surface of perovskite films...
March 26, 2024: Advanced Materials
https://read.qxmd.com/read/38528662/crossbreeding-effect-of-chalcogenation-and-iodination-on-benzene-additives-enables-optimized-morphology-and-19-68-efficiency-of-organic-solar-cells
#10
JOURNAL ARTICLE
Tao Zhou, Wenwen Jin, Yinfeng Li, Xiaopeng Xu, Yuwei Duan, Ruipeng Li, Liyang Yu, Qiang Peng
Volatile solid additives have attracted increasing attention in optimizing the morphology and improving the performance of currently dominated non-fullerene acceptor-based organic solar cells (OSCs). However, the underlying principles governing the rational design of volatile solid additives remain elusive. Herein, a series of efficient volatile solid additives are successfully developed by the crossbreeding effect of chalcogenation and iodination for optimizing the morphology and improving the photovoltaic performances of OSCs...
March 25, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://read.qxmd.com/read/38528377/molecularly-engineered-multifunctional-bridging-layer-derived-from-dithiafulavene-capped-spiroxanthene-for-stable-and-efficient-perovskite-solar-cells
#11
JOURNAL ARTICLE
Afzal Siddiqui, Faranak Sadegh, Kodali Phani Kumar, Priksha Rana, Pankaj Yadav, Daniel Prochowicz, Surya Prakash Singh, Seckin Akin
This study introduces a novel approach centered around the design and synthesis of an interfacial passivating layer in perovskite solar cells (PSCs). This architectural innovation is realized through the development of a specialized material, termed dithiafulvene end-capped Spiro[fluorene-9,9'-xanthene], denoted by the acronym AF32. In this design architecture, dithiafulvene is thoughtfully attached to the spiroxanthene fluorene core with phenothiazine as the spacer unit, possessing multiple alkyl chains. AF32 passivates interfacial defects by coordinating the sulfur constituents of the phenothiazine and dithiafulvene frameworks to the uncoordinated Pb2+ cations on the surface of the perovskite film, and the alkyl chains construct a hydrophobic environment, preventing moisture from entering the hydrophilic perovskite layer and improving the long-term stability of PSCs...
March 25, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38528028/solar-driven-sugar-production-directly-from-co-2-via-a-customizable-electrocatalytic-biocatalytic-flow-system
#12
JOURNAL ARTICLE
Guangyu Liu, Yuan Zhong, Zehua Liu, Gang Wang, Feng Gao, Chao Zhang, Yujie Wang, Hongwei Zhang, Jun Ma, Yangguang Hu, Aobo Chen, Jiangyuan Pan, Yuanzeng Min, Zhiyong Tang, Chao Gao, Yujie Xiong
Conventional food production is restricted by energy conversion efficiency of natural photosynthesis and demand for natural resources. Solar-driven artificial food synthesis from CO2 provides an intriguing approach to overcome the limitations of natural photosynthesis while promoting carbon-neutral economy, however, it remains very challenging. Here, we report the design of a hybrid electrocatalytic-biocatalytic flow system, coupling photovoltaics-powered electrocatalysis (CO2 to formate) with five-enzyme cascade platform (formate to sugar) engineered via genetic mutation and bioinformatics, which achieves conversion of CO2 to C6 sugar (L-sorbose) with a solar-to-food energy conversion efficiency of 3...
March 25, 2024: Nature Communications
https://read.qxmd.com/read/38527959/fluorinated-polyimide-tunneling-layer-for-efficient-and-stable-perovskite-photovoltaics
#13
JOURNAL ARTICLE
Chunming Liu, Wei Yu, Yuheng Li, Can Wang, Zilong Zhang, Chi Li, Lusheng Liang, Kangcheng Chen, Lin Liu, Tinghao Li, Xuteng Yu, Yao Wang, Peng Gao
Despite the remarkable progress of perovskite solar cells (PSCs), challenges remain in terms of finding effective and viable strategies to enhance their long-term stability while maintaining high efficiency. In this study, a new insulating and hydrophobic fluorinated polyimide (FPI: 6FDA-6FAPB) was used as the interface layer between the perovskite layer and the hole transport layer (HTL) in PSCs. The functional groups of FPI play a pivotal role in passivating interface defects within the device. Due to its high work function, FPI demonstrates field-effect passivation (FEP) capabilities as an interface layer, effectively mitigating non-radiative recombination at the interface...
March 25, 2024: Angewandte Chemie
https://read.qxmd.com/read/38527550/simulation-of-particle-deposition-on-solar-photovoltaic-panels-based-on-a-new-critical-capture-velocity-criterion
#14
JOURNAL ARTICLE
Jun Xie, Hang Zhang, Jinlin Bian, Shuang Wang, Ming Dong, Rundong Li
Solar energy, as a clean energy source, is becoming increasingly important in the global energy mix. However, particle deposition on the surface of photovoltaic (PV) panels can significantly reduce their power generation efficiency. In this study, the collision-deposition behaviour between silica particles and the surface of PV modules is investigated. The impact process of 13 μm silica particles on the glass surface was recorded by using a high-speed digital camera at various incident velocities and angles...
March 23, 2024: Science of the Total Environment
https://read.qxmd.com/read/38527274/narrow-bandgap-metal-halide-perovskites-for-all-perovskite-tandem-photovoltaics
#15
REVIEW
Shuaifeng Hu, Jarla Thiesbrummel, Jorge Pascual, Martin Stolterfoht, Atsushi Wakamiya, Henry J Snaith
All-perovskite tandem solar cells are attracting considerable interest in photovoltaics research, owing to their potential to surpass the theoretical efficiency limit of single-junction cells, in a cost-effective sustainable manner. Thanks to the bandgap-bowing effect, mixed tin-lead (Sn-Pb) perovskites possess a close to ideal narrow bandgap for constructing tandem cells, matched with wide-bandgap neat lead-based counterparts. The performance of all-perovskite tandems, however, has yet to reach its efficiency potential...
March 25, 2024: Chemical Reviews
https://read.qxmd.com/read/38527253/perylene-diimide-based-dimeric-electron-acceptors-with-molecular-conformations-for-perovskite-solar-cells
#16
JOURNAL ARTICLE
Gözde Murat Saltan, Tamer Yeşil, Aysun Albayrak Ötken, Ceylan Zafer, Haluk Dinçalp
This paper reports five novel PDI dimer type electron transport materials (ETMs) employing o-indoloquinoxaline (o-Iq), m-indoloquinoxaline (m-Iq), and cibalackrot (Ci) groups as the core building blocks and presents the twisted structures of PDI dimers coded as PDI-NHR-o-Iq, PDI-o-Iq, PDI-NHR-m-Iq, PDI-m-Iq and PDI-NHR-Ci dyes (see Scheme 1 and 2). We have systematically compared their photophysical, electrochemical, and optoelectronic properties with respect to the reference dye (2PDI-NHR), which is directly connected of two PDI planes...
March 25, 2024: ChemPlusChem
https://read.qxmd.com/read/38526453/cpe-na-based-hole-transport-layers-for-improving-the-stability-in-nonfullerene-organic-solar-cells-a-comprehensive-study
#17
JOURNAL ARTICLE
Mohamed Samir, Enas Moustafa, Osbel Almora, Magaly Ramírez-Como, Maria Pilar Montero-Rama, José G Sánchez, Emilio Palomares, Josep Pallarès, Lluis F Marsal
Organic photovoltaic (OPV) cells have experienced significant development in the last decades after the introduction of nonfullerene acceptor molecules with top power conversion efficiencies reported over 19% and considerable versatility, for example, with application in transparent/semitransparent and flexible photovoltaics. Yet, the optimization of the operational stability continues to be a challenge. This study presents a comprehensive investigation of the use of a conjugated polyelectrolyte polymer (CPE-Na) as a hole layer (HTL) to improve the performance and longevity of OPV cells...
March 25, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38526219/ultrafast-electron-and-hole-transfer-and-efficient-charge-separation-in-a-sb-2-se-3-cds-thin-film-p-n-heterojunction
#18
JOURNAL ARTICLE
Arshdeep Kaur, Tanmay Goswami, Kaliyamoorthy Justice Babu, Hirendra N Ghosh
Harvesting solar energy for different applications requires the continuous development of new semiconducting materials to exploit a broad part of the solar spectrum. In this direction, antimony selenide (Sb2 Se3 ) has attracted a tremendous amount of attention over the past few years as a light-harvesting material for photovoltaic device applications owing to its phase stability, high absorption coefficient, earth abundance, and low toxicity. Here, we have fabricated a high-quality heterojunction of a p-type Sb2 Se3 film and an n-type CdS film using the thermal evaporation technique...
March 25, 2024: Journal of Physical Chemistry Letters
https://read.qxmd.com/read/38524428/recent-advances-in-graphene-enabled-materials-for-photovoltaic-applications-a-comprehensive-review
#19
REVIEW
Pragyan Jain, R S Rajput, Sunil Kumar, Arti Sharma, Akshay Jain, Bhaskor Jyoti Bora, Prabhakar Sharma, Raman Kumar, Mohammad Shahid, Ali A Rajhi, Majed Alsubih, Mohd Asif Shah, Abhijit Bhowmik
Graphene's two-dimensional structural arrangement has sparked a revolutionary transformation in the domain of conductive transparent devices, presenting a unique opportunity in the renewable energy sector. This comprehensive Review critically evaluates the most recent advances in graphene production and its employment in solar cells, focusing on dye-sensitized, organic, and perovskite devices for bulk heterojunction (BHJ) designs. This comprehensive investigation discovered the following captivating results: graphene integration resulted in a notable 20...
March 19, 2024: ACS Omega
https://read.qxmd.com/read/38519145/macromers-for-encapsulating-perovskite-photovoltaics-and-achieving-high-stability
#20
JOURNAL ARTICLE
Xiaohua Tang, Tianjiao Zhang, Weijie Chen, Haiyang Chen, Zhichao Zhang, Xining Chen, Hao Gu, Shuaiqing Kang, Chuanshuai Han, Tingting Xu, Jianlei Cao, Jialei Zheng, Xuemei Ou, Yaowen Li, Yongfang Li
Perovskite solar cells (pero-SCs) are highly unstable even under trace water. Although blanket encapsulation (BE) strategy applied in industry can effectively block moisture invasion, the commercial ultraviolet-curable adhesives (UVCAs) for BE still trigger power conversion efficiency deterioration, and the degradation mechanism remains unknown. For the first time, we revealed the functions of commercial UVCAs in BE-processed pero-SCs, where the small-sized monomer easily permeates to perovskite surface, forming an insulating barrier to block charge extraction, while the high-polarity moiety can destroy perovskite lattice...
March 22, 2024: Advanced Materials
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