Solar RRL最新文献

{"title":"Front Cover: Giant-Domain Perovskite Films via Reduced-Temperature Meniscus-Guided Coating: Fluid-Dynamic Control of Supersaturation (Sol. RRL 6/2026)","authors":"Shogo Miyake,&nbsp;Akihiko Fujii,&nbsp;Hitoshi Kubo,&nbsp;Kazuma Nakajima,&nbsp;Masanori Ozaki,&nbsp;Kenjiro Fukuda","doi":"10.1002/solr.70336","DOIUrl":"10.1002/solr.70336","url":null,"abstract":"<p><b>Perovskite Films</b></p><p>The image illustrates the synergy between fluid dynamic simulations and large-area meniscus coating processes. The bottom streamlines represent the theoretical modeling of precursor flow, which directly informs the precision of the bar-coating process shown in the center. This optimized deposition leads to the formation of highly ordered spherulitic crystal structures (top-left inset), paving the way for efficient and scalable perovskite solar cells. More in article number e202600003, Kenjiro Fukuda and co-workers.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.70336","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Cover: Giant-Domain Perovskite Films via Reduced-Temperature Meniscus-Guided Coating: Fluid-Dynamic Control of Supersaturation (Sol. RRL 6/2026)","authors":"Shogo Miyake,&nbsp;Akihiko Fujii,&nbsp;Hitoshi Kubo,&nbsp;Kazuma Nakajima,&nbsp;Masanori Ozaki,&nbsp;Kenjiro Fukuda","doi":"10.1002/solr.70336","DOIUrl":"https://doi.org/10.1002/solr.70336","url":null,"abstract":"<p><b>Perovskite Films</b></p><p>The image illustrates the synergy between fluid dynamic simulations and large-area meniscus coating processes. The bottom streamlines represent the theoretical modeling of precursor flow, which directly informs the precision of the bar-coating process shown in the center. This optimized deposition leads to the formation of highly ordered spherulitic crystal structures (top-left inset), paving the way for efficient and scalable perovskite solar cells. More in article number e202600003, Kenjiro Fukuda and co-workers.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.70336","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Giant-Domain Perovskite Films via Reduced-Temperature Meniscus-Guided Coating: Fluid-Dynamic Control of Supersaturation","authors":"Shogo Miyake,&nbsp;Akihiko Fujii,&nbsp;Hitoshi Kubo,&nbsp;Kazuma Nakajima,&nbsp;Masanori Ozaki,&nbsp;Kenjiro Fukuda","doi":"10.1002/solr.202600003","DOIUrl":"https://doi.org/10.1002/solr.202600003","url":null,"abstract":"<p>Scalable fabrication of high-quality perovskite films is critical for the industrialization of perovskite solar cells (PSCs). Meniscus-guided coating is promising, yet the trade-off between maintaining liquid film continuity and securing the time window for crystal growth remains a significant bottleneck. Here, we demonstrate a strategy to achieve both full coverage and giant domains (&gt;3 × 10⁻² mm²) via reduced-temperature (100°C) bar-coating. By integrating in situ microscopy with fluid dynamics analysis, we reveal that a specific low-speed condition (0.3 mm s⁻¹) within the evaporation regime maintains the solution in a metastable supersaturation zone. Our analysis identifies that the circulation loop formed by the interaction of Couette and Marangoni flows not only continuously supplies solute to the meniscus tip but also suppresses excessive evaporation through advective cooling. This fluid-dynamic regulation prevents explosive nucleation while circumventing the film rupture (dewetting) often observed in slow drying, enabling the formation of continuous films with giant crystal domains. Consequently, PSCs utilizing these giant-domain films achieved a power conversion efficiency of 16.5%, significantly outperforming devices with smaller crystal domains. This study provides a physical framework linking macroscopic coating parameters to microscopic crystallization dynamics, offering a rational pathway for scalable, high-performance device manufacturing.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202600003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Giant-Domain Perovskite Films via Reduced-Temperature Meniscus-Guided Coating: Fluid-Dynamic Control of Supersaturation","authors":"Shogo Miyake,&nbsp;Akihiko Fujii,&nbsp;Hitoshi Kubo,&nbsp;Kazuma Nakajima,&nbsp;Masanori Ozaki,&nbsp;Kenjiro Fukuda","doi":"10.1002/solr.202600003","DOIUrl":"10.1002/solr.202600003","url":null,"abstract":"<p>Scalable fabrication of high-quality perovskite films is critical for the industrialization of perovskite solar cells (PSCs). Meniscus-guided coating is promising, yet the trade-off between maintaining liquid film continuity and securing the time window for crystal growth remains a significant bottleneck. Here, we demonstrate a strategy to achieve both full coverage and giant domains (&gt;3 × 10⁻² mm²) via reduced-temperature (100°C) bar-coating. By integrating in situ microscopy with fluid dynamics analysis, we reveal that a specific low-speed condition (0.3 mm s⁻¹) within the evaporation regime maintains the solution in a metastable supersaturation zone. Our analysis identifies that the circulation loop formed by the interaction of Couette and Marangoni flows not only continuously supplies solute to the meniscus tip but also suppresses excessive evaporation through advective cooling. This fluid-dynamic regulation prevents explosive nucleation while circumventing the film rupture (dewetting) often observed in slow drying, enabling the formation of continuous films with giant crystal domains. Consequently, PSCs utilizing these giant-domain films achieved a power conversion efficiency of 16.5%, significantly outperforming devices with smaller crystal domains. This study provides a physical framework linking macroscopic coating parameters to microscopic crystallization dynamics, offering a rational pathway for scalable, high-performance device manufacturing.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202600003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Power Conversion Efficiency of Polycrystalline Si Solar Cells via Temperature Regulation","authors":"Shuaitao Zhao,&nbsp;Baiqi Tian,&nbsp;Zhongwen Jin,&nbsp;Jintong Sun,&nbsp;Tianle Wang,&nbsp;Bingqing Wei,&nbsp;Zhigang Li","doi":"10.1002/solr.202500666","DOIUrl":"10.1002/solr.202500666","url":null,"abstract":"<p>Enhancing the power conversion efficiency (PCE) of solar cells remains a key focus in advancing photovoltaic technologies, particularly for applications in space and planetary exploration. Recently, it has been demonstrated that by inhibiting the thermal losses of monocrystalline single-junction Si solar cells, the PCE can be significantly improved. However, it remains unclear whether this strategy can be applied to other types of solar cells, e.g., polycrystalline Si solar cells. Here, we report a comparison of the impact of temperature on the PCE of polycrystalline single-junction Si solar cells using high-photon-energy (520 nm) and low-photon-energy (980 nm) lasers. A significant PCE increase from 9.3% (300 K) to 44.8% (40 K) was observed for the 520 nm laser, while for the 980 nm laser, the PCE increase is not significant. The difference is attributed to the suppression of thermal loss, which is more pronounced for high-energy photons. Furthermore, the grain boundary barrier in polysilicon causes scattering of carriers when using the 980 nm laser, but the scattering under the 520 nm laser can be neglected. Understanding these new observations opens opportunities for designing solar cells with even higher PCEs to provide efficient and powerful energy sources for cryogenic devices.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Power Conversion Efficiency of Polycrystalline Si Solar Cells via Temperature Regulation","authors":"Shuaitao Zhao,&nbsp;Baiqi Tian,&nbsp;Zhongwen Jin,&nbsp;Jintong Sun,&nbsp;Tianle Wang,&nbsp;Bingqing Wei,&nbsp;Zhigang Li","doi":"10.1002/solr.202500666","DOIUrl":"https://doi.org/10.1002/solr.202500666","url":null,"abstract":"<p>Enhancing the power conversion efficiency (PCE) of solar cells remains a key focus in advancing photovoltaic technologies, particularly for applications in space and planetary exploration. Recently, it has been demonstrated that by inhibiting the thermal losses of monocrystalline single-junction Si solar cells, the PCE can be significantly improved. However, it remains unclear whether this strategy can be applied to other types of solar cells, e.g., polycrystalline Si solar cells. Here, we report a comparison of the impact of temperature on the PCE of polycrystalline single-junction Si solar cells using high-photon-energy (520 nm) and low-photon-energy (980 nm) lasers. A significant PCE increase from 9.3% (300 K) to 44.8% (40 K) was observed for the 520 nm laser, while for the 980 nm laser, the PCE increase is not significant. The difference is attributed to the suppression of thermal loss, which is more pronounced for high-energy photons. Furthermore, the grain boundary barrier in polysilicon causes scattering of carriers when using the 980 nm laser, but the scattering under the 520 nm laser can be neglected. Understanding these new observations opens opportunities for designing solar cells with even higher PCEs to provide efficient and powerful energy sources for cryogenic devices.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tetrabutylammonium Additive Engineering to Sequentially Deposit Perovskite for Carbon-Based Perovskite Solar Cells","authors":"Le Jiang,&nbsp;Jialiang Li,&nbsp;Mengqi Geng,&nbsp;Yingxiang Zhang,&nbsp;Dan Lu,&nbsp;Bin Li,&nbsp;Yu Gu,&nbsp;Tingting Xu","doi":"10.1002/solr.202500695","DOIUrl":"10.1002/solr.202500695","url":null,"abstract":"<p>With rapid development of perovskite solar cells (PSCs), high-quality perovskite active layers can be obtained through various approaches. Defect passivation in the bulk or at the interface of the perovskite films has shown excellent effects on improving the power conversion efficiency (PCE) and long-term stability of PSCs. Among various passivation strategies, quaternary ammonium salt passivators exhibit excellent application potential due to their dual functions of ionic defect compensation and crystallization kinetics modulation. Herein, two representative quaternary ammonium halides of tetrabutylammonium iodide (TBAI) and tetrabutylammonium bromide (TBAB) are applied in a sequential-deposition process to passivate the defects of perovskite films. Their respective passivation effects are compared with an emphasis on the impact of different halogen atoms. It finds that TBAB outperforms TBAI in regulating crystallization kinetics, delaying nucleation, and reducing defect density, mainly because of the weaker interaction between TBA⁺ and Br⁻ than that of TBAI. During annealing, partially dissociated Br⁻ ions can dynamically coordinate with the undercoordinated Pb²⁺, while TBAI remains more stable under similar conditions. The results indicated that TBAB-modified carbon-based perovskite solar cells (C-PSCs) exhibited superior maximum PCE of 14.85%, compared to that of the TBAI-based one with a 14.02% PCE. Additionally, long-term stability of PSCs was also enhanced via the hydrophobic alkyl chains of the quaternary ammonium halides to form moisture-resistant barriers. Remarkably, after 40 days of storage at 30%–40% relative humidity, the TBAI- and TBAB-modified devices retained over 85% and 90% of their initial efficiency, respectively, demonstrating exceptional long-term stability of the modified devices. These findings emphasize the key role of halide anion selection in the optimization of quaternary ammonium salt passivators, providing molecular design strategies for developing high-efficiency, low-cost C-PSCs through multifunctional additive engineering.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Soiling Dynamics and Cleaning Efficiency for Photovoltaic Modules Under Different Dust Environments","authors":"John (Ioannis) A. Tsanakas,&nbsp;Jean Patrice Rakotoniaina,&nbsp;J. Montoya,&nbsp;Douglas Olivares Soza,&nbsp;Eric Pilat,&nbsp;Aitor Marzo,&nbsp;Valeria Del Campo,&nbsp;Edward Vidal Fuentealba,&nbsp;Martin Gaete,&nbsp;Jérémie Aimé,&nbsp;Delfina Muñoz","doi":"10.1002/solr.202500792","DOIUrl":"10.1002/solr.202500792","url":null,"abstract":"<p>Laboratory protocols that predictively reproduce site-specific soiling dynamics are required to accelerate prefield screening of photovoltaic (PV) materials, coatings, and cleaning strategies. Here we present a novel controlled soiling-and-cleaning testbed and a parametrized protocol that reproduces both deposition morphology and humidity-driven cementation observed in two contrasting environments: a quarry/agricultural site in Southern France and the gypsum-rich Atacama Desert (PSDA). Using site-collected dusts and accelerated humidity–temperature cycling, the chamber reproduces field-observed cementation microstructures and electrical/spectral penalties in ≈1.5 days of testing (vs. ≈1 month outdoor). We quantify how front-cover coatings, encapsulants, and tilt angle affect spectral transmittance and short-circuit current (<i>I</i>_SC) losses, and evaluate cleaning efficiency using robotic brush passes. Key findings of this work are: (i) antireflective antisoiling coatings reduce optical losses substantially, whereas encapsulant choice has a negligible effect on soiling behavior; (ii) darker, mineral-rich Mediterranean dusts impose larger spectral penalties per unit mass but are easier to remove; (iii) gypsum-rich Atacama dusts produce lower immediate optical losses but stronger cementation-driven adhesion; and (iv) a single-pass robotic cleaning recovers &gt;98% of the <i>I</i>_SC losses. The protocol thus enables rapid, site-tailored evaluation of coatings and cleaning strategies, bridging laboratory and field observations in a reproducible framework.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202500792","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Thermal Dynamics of Floating Photovoltaic Systems","authors":"A. Kaul,&nbsp;N. van den Nobelen,&nbsp;S. Golroodbari,&nbsp;W. G. J. H. M. van Sark","doi":"10.1002/solr.202500588","DOIUrl":"https://doi.org/10.1002/solr.202500588","url":null,"abstract":"<p>Floating photovoltaic systems (FPV) gain attention as a renewable energy generation source, especially in regions of limited land availability. As the technology emerges, accurate thermal modelling remains a key challenge due to complex coupling between irradiance and wind flow given varying floating structures. Since the spatial variability of wind dynamics across FPV systems remains poorly understood, this limits the accurate temperature and thus performance modelling. This study presents a scalable methodology that integrates computational fluid dynamics (CFD) derived wind decay functions into a dynamic heat transfer model to capture regional variations in module cooling. The approach is applied to a large FPV installation in the Netherlands, divided into multiple zones. The model incorporates convective, conductive, and radiative heat exchanges to calculate front, cell, and back temperatures. Validation against measured module temperatures over multiple seasons shows strong agreement, with normalised root mean square error (NRMSE) values between 6.5% to 12.5% under varying ambient conditions across daily and seasonal timescales. When compared with steady-state models such as Faiman and PVsyst, the proposed model demonstrates improved accuracy and adaptability to transient meteorological changes.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202500588","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147614940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliable In Situ Probing of Perovskite Solar Cells Under Space-Relevant Vacuum-Thermal Cycling","authors":"Xianchao Lu,&nbsp;Zhiyong Wang,&nbsp;Qianru Lin,&nbsp;Jie Sheng,&nbsp;Azat F. Akbulatov,&nbsp;Sergey M. Aldoshin,&nbsp;Pavel A. Troshin,&nbsp;Yantao Shi,&nbsp;Liyi Li","doi":"10.1002/solr.202500753","DOIUrl":"10.1002/solr.202500753","url":null,"abstract":"<p>Perovskite solar cells (PSCs) offer high efficiency and ultralight weight, making them promising for aerospace use. However, their stability under extreme vacuum (10⁻⁸Pa) and thermal cycling (150 K-430 K) conditions remains unclear. Here, we present an in situ ultrahigh-vacuum platform that decouples atmospheric effects and enables direct monitoring of FAPbI₃ films and devices. The absorber shows irreversible decomposition into PbI₂ and volatile organics, with degradation most pronounced during the first cycle. In situ X-ray photoelectron spectroscopy (XPS)/quadrupole mass spectrometry (QMS) trace ion loss and gas release, while ex situ characterizations confirm structural collapse. Devices retain &gt;80% efficiency after five cycles but exhibit reduced short-circuit current density (<i>J</i>_SC) and severe interfacial ion migration (Ag⁺, Pb²⁺, I^–, Ni²⁺). This study provides critical mechanistic insights into PSC degradation under space stresses and establishes an in situ method yielding reliable degradation data for space-relevant evaluation.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"10 6","pages":""},"PeriodicalIF":6.0,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}