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Improving the stability of thin polycrystalline silicon passivated contacts using titanium dioxide interlayers
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-03-01 DOI: 10.1016/j.solmat.2025.113523
Di Yan , Jesus Ibarra Michel , Sieu Pheng Phang , Rabin Basnet , Yida Pan , Brett C. Johnson , Jimmy Sun , Yumin Li , Heping Shen , Jie Yang , Xinyu Zhang , Daniel Macdonald , Peiting Zheng , James Bullock
{"title":"Improving the stability of thin polycrystalline silicon passivated contacts using titanium dioxide interlayers","authors":"Di Yan ,&nbsp;Jesus Ibarra Michel ,&nbsp;Sieu Pheng Phang ,&nbsp;Rabin Basnet ,&nbsp;Yida Pan ,&nbsp;Brett C. Johnson ,&nbsp;Jimmy Sun ,&nbsp;Yumin Li ,&nbsp;Heping Shen ,&nbsp;Jie Yang ,&nbsp;Xinyu Zhang ,&nbsp;Daniel Macdonald ,&nbsp;Peiting Zheng ,&nbsp;James Bullock","doi":"10.1016/j.solmat.2025.113523","DOIUrl":"10.1016/j.solmat.2025.113523","url":null,"abstract":"<div><div>Polycrystalline silicon (poly-Si) passivated contacts are one of the key technologies in the push towards silicon's theoretical efficiency limit of 29.4 %. However, degradation of silicon surface passivation during metallisation remains an issue, necessitating thick poly-Si layers which negatively impact transparency and deposition time. In this work, we introduce titanium dioxide (TiO<sub>2</sub>) based protective interlayers between the thin poly-Si layer (&lt;40 nm) and metal electrodes. Thicker TiO<sub>2</sub> interlayers are generally found to provide better protection, however, even thin TiO<sub>2</sub> interlayers (∼7 nm) provide significant thermal stability enhancement over unprotected poly-Si films. Greater thermal stability is afforded when utilising a higher temperature TiO<sub>2</sub> deposition step (250 °C), or a pre-metallisation anneal step (450 °C). These improvements in surface passivation thermal stability come at the expense of higher contact resistivity, ρ<sub>c</sub>, however, the final ρ<sub>c</sub> values are still acceptable for full area contacts. The best TiO<sub>2</sub> films were deposited at 250 °C using titanium tetraisopropoxide (TTIP) and Tetrakis (dimethylamido) titanium (TDMAT) precursors, which permitted the preservation of implied open circuit voltages, iV<sub>oc</sub> &gt; 700 mV, and ρ<sub>c</sub> values &lt; 47 mΩ-cm<sup>2</sup> after post-metallisation annealing at ≥ 500 °C. The protective effects of this interlayer structure may allow the thinning of poly-Si layers, reducing their parasitic absorption, and permitting their usage on both sides of silicon solar cells.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113523"},"PeriodicalIF":6.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Epi-grown broadband reflector for InAs-based thermophotovoltaics
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-03-01 DOI: 10.1016/j.solmat.2025.113544
Gavin P. Forcade , Mathieu de Lafontaine , Mathieu Giroux , Man Chun Tam , Zbig Wasilewski , Jacob J. Krich , Raphael St-Gelais , Karin Hinzer
{"title":"Epi-grown broadband reflector for InAs-based thermophotovoltaics","authors":"Gavin P. Forcade ,&nbsp;Mathieu de Lafontaine ,&nbsp;Mathieu Giroux ,&nbsp;Man Chun Tam ,&nbsp;Zbig Wasilewski ,&nbsp;Jacob J. Krich ,&nbsp;Raphael St-Gelais ,&nbsp;Karin Hinzer","doi":"10.1016/j.solmat.2025.113544","DOIUrl":"10.1016/j.solmat.2025.113544","url":null,"abstract":"<div><div>Reflecting sub-bandgap photons is crucial for maximizing the efficiency of thermophotovoltaic devices. However, existing metal-deposited reflectors rely on back-side metallization, which cannot be grown epitaxially, necessitating additional processing steps. In this study, we fabricate InAs-based thermophotovoltaic devices featuring a straightforward, epitaxially grown sub-bandgap reflector composed of a single layer of n-doped InAs at a doping concentration of 2.4 × 10<sup>19</sup> cm<sup>−3</sup>. This high doping produces long-wavelength metallic-like reflection, and our devices demonstrate high sub-bandgap reflectivity from 3.5 to 17 μm, achieving up to 93 % reflectivity compared to 30–40 % for designs without the reflector. Using a calibrated optical model, we predict that the sub-bandgap reflectivity of this layer enhances spectral efficiency from 38 % to 79 % under a 600 K normally incident blackbody spectrum. This improvement rivals that of a standard gold back reflector, which achieves a spectral efficiency of 94 %. Additionally, our predictive electrical model, calibrated with fabricated devices, indicates that the reflective layer does not adversely affect the electrical properties of the thermophotovoltaic devices. This sub-bandgap reflector can be integrated into existing InAs-based thermophotovoltaic fabrication processes, eliminating complex substrate removal steps required for traditional gold reflectors.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113544"},"PeriodicalIF":6.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advancements and prospects of MXenes in emerging solar cell technologies
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-03-01 DOI: 10.1016/j.solmat.2025.113540
Praveen Kumar Kanti , Deepthi Jayan K. , Jhilmil Swapnalin , V. Vicki Wanatasanappan
{"title":"Advancements and prospects of MXenes in emerging solar cell technologies","authors":"Praveen Kumar Kanti ,&nbsp;Deepthi Jayan K. ,&nbsp;Jhilmil Swapnalin ,&nbsp;V. Vicki Wanatasanappan","doi":"10.1016/j.solmat.2025.113540","DOIUrl":"10.1016/j.solmat.2025.113540","url":null,"abstract":"<div><div>The global shift toward renewable energy underscores the importance of solar energy as a sustainable, emission-free solution. While traditional materials like silicon and indium tin oxide face challenges such as high costs and environmental concerns, MXenes—two-dimensional transition metal carbides/nitrides—offer a promising alternative. Their high electrical conductivity, chemical stability, and mechanical flexibility make MXenes ideal for roles in transparent conductive electrodes (TCEs), electron transport layers (ETLs), and hole transport layers (HTLs). MXenes enhance the performance, efficiency, and stability of solar cells, including perovskite, tandem, organic, quantum dot, and dye-sensitized types, by improving charge transfer and reducing recombination. This review highlights recent advancements in MXene applications across emerging solar technologies, emphasizing their potential to drive innovation and sustainability in solar energy systems through ongoing advancements in synthesis and optimization.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113540"},"PeriodicalIF":6.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compressed air concentrated solar pyrolysis furnace: A techno-environment-economic case study in Qinghai 压缩空气集中太阳能热解炉:青海技术环境经济案例研究
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-03-01 DOI: 10.1016/j.solmat.2025.113484
Yi Yao , Dominic C.Y. Foo , Wai-Siong Chai , Tao Wu , Cheng Heng Pang
{"title":"Compressed air concentrated solar pyrolysis furnace: A techno-environment-economic case study in Qinghai","authors":"Yi Yao ,&nbsp;Dominic C.Y. Foo ,&nbsp;Wai-Siong Chai ,&nbsp;Tao Wu ,&nbsp;Cheng Heng Pang","doi":"10.1016/j.solmat.2025.113484","DOIUrl":"10.1016/j.solmat.2025.113484","url":null,"abstract":"<div><div>Biomass pyrolysis is widely implemented for production of bio-fuels due to its flexibility and renewability. However, conventional biomass pyrolysis is predominantly achieved via electrical heating, which mostly derives from non-renewable fossil fuels. Hence, this paper proposes a solar pyrolysis furnace to achieve heating from solar concentration via a solar parabolic dish. The energy provision is accomplished by a flow of solar heated compressed air inside metal coils wrapping around the pyrolysis tube. The conceptual design was conducted using Solidworks software with the numerical simulation performed with its Flow Simulation studio. The simulation results indicate that the proposed design is able to achieve operation temperature of more than 500 °C with a heating rate of 18.0 °C <span><math><mrow><mo>∙</mo></mrow></math></span> min<sup>-1</sup>, which is comparable to commercially-available electrical furnaces. The available heat provision to the unit mass of biomass during pyrolysis is up to 1.24 MJ∙kg<sup>-1</sup>. A case study in Qinghai was also performed to understand the economic and environmental performance of the proposed design where the results are promising. This work establishes the potential of the proposed concentrated solar furnace, from technical, environmental and economic perspectives, for wider applications, particularly for biomass pyrolysis in deriving clean energy and functional carbon materials.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113484"},"PeriodicalIF":6.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Waterbased electrically conductive adhesive for PERC-type shingled solar cells
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI: 10.1016/j.solmat.2025.113525
Hüseyin Utkucan Kayacı , Gurcan Utku Ozdemir , Meryem Ezgi Karahalli , Ahmet Hamdi Aksoy , Serdar Guler , Doga Doganay , Sahin Coskun , Talat Ozden , Simge Çınar Aygün , Rasit Turan , Husnu Emrah Unalan
{"title":"Waterbased electrically conductive adhesive for PERC-type shingled solar cells","authors":"Hüseyin Utkucan Kayacı ,&nbsp;Gurcan Utku Ozdemir ,&nbsp;Meryem Ezgi Karahalli ,&nbsp;Ahmet Hamdi Aksoy ,&nbsp;Serdar Guler ,&nbsp;Doga Doganay ,&nbsp;Sahin Coskun ,&nbsp;Talat Ozden ,&nbsp;Simge Çınar Aygün ,&nbsp;Rasit Turan ,&nbsp;Husnu Emrah Unalan","doi":"10.1016/j.solmat.2025.113525","DOIUrl":"10.1016/j.solmat.2025.113525","url":null,"abstract":"<div><div>This study explores the development of innovative, environmentally friendly water-based electrically conductive adhesives (ECAs) designed specifically for interconnecting shingled passivated emitter rear cell (PERC) solar cells. Formulated with silver (Ag) microflakes and optimized polymeric additives, these adhesives aim to enhance electrical conductivity, adhesion strength, and reliability under real-world operating conditions of solar cells. By reducing reliance on conventional solvent-based adhesives, the water-based ECAs offer significant environmental benefits, including reduced volatile organic compound (VOC) emissions and improved handling safety, aligning with sustainable manufacturing practices. Through systematic experimental analysis and detailed characterization, the water-based adhesives demonstrated a yield stress of 4.8 MPa and a low volume resistivity of 22 μOhm-cm at a film thickness of 25 μm. A 0.4 % increase in power conversion efficiency is obtained compared to commercial counterparts. This efficiency improvement is attributed to the uniform dispersion and stabilization of Ag microflakes within the adhesive matrix, enabled by water-based dispersion techniques. These findings highlight the feasibility and effectiveness of water-based ECAs as a viable interconnection method, providing a balance of high conductivity and eco-friendliness. This research advances sustainable, cost-effective adhesive solutions in photovoltaic technology and beyond, aiding the industry's shift toward cleaner and more efficient solar cell production.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113525"},"PeriodicalIF":6.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance evaluation of a solar dish system with hybrid nanofluid cooling and sustainable thermoelectric power generation: Incorporating experimental property data
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI: 10.1016/j.solmat.2025.113508
M. Sheikholeslami , N. Ataollahi , P. Scardi , M.A. Malagutti
{"title":"Performance evaluation of a solar dish system with hybrid nanofluid cooling and sustainable thermoelectric power generation: Incorporating experimental property data","authors":"M. Sheikholeslami ,&nbsp;N. Ataollahi ,&nbsp;P. Scardi ,&nbsp;M.A. Malagutti","doi":"10.1016/j.solmat.2025.113508","DOIUrl":"10.1016/j.solmat.2025.113508","url":null,"abstract":"<div><div>This research presents a sustainable approach by integrating thermoelectric modules with solar dish systems to boost energy efficiency. The study investigates the incorporation of a thermoelectric generator (TEG) into a solar dish system, employing thin-film TEGs made from eco-friendly materials, specifically CTS (Cu<sub>2</sub>SnS<sub>3</sub>) for the p-type and CAFS (Cu<sub>0.85</sub>Ag<sub>0.15</sub>FeS<sub>2</sub>) for the n-type legs. Soda Lime Glass (SLG) and polyimide are used as substrates. A thermal resistance model is developed, and energy balance principles guide the derivation of equations to determine temperatures at the TEG's hot and cold sides, alongside the electrical current. Simulations were validated against experimental data, demonstrating good accuracy. The TEG geometry is optimized by adjusting leg widths, showing that the best dimensions for maximum power are 3 mm for the p-type leg, 4 mm for the n-type, and 1 mm for substrate gaps. To further boost voltage, multiple TEGs are connected in series at the solar dish's focal point. Cooling on the cold side is enhanced by a hybrid nanofluid channel (water mixed with Fe<sub>3</sub>O<sub>4</sub>-SiO<sub>2</sub> nanoparticles). Results showed notable performance improvements, with solar irradiation increasing maximum power (P<sub>max</sub>) by 3.23 %. Additionally, increasing the hybrid nanofluid fraction (ϕ) with SLG substrates elevated P<sub>max</sub> by 1.95 %, while using polyimide instead of SLG under optimal conditions increased P<sub>max</sub> by 25.28 %. This study highlights the potential for integrating thermoelectric modules in solar dish systems to enhance efficiency and sustainability. The combination of eco-friendly materials and advanced cooling methods, like hybrid nanofluids, not only improves energy generation but also helps reduce environmental issues. These advancements support renewable energy technologies and contribute to process safety by minimizing dependence on non-renewable sources and utilizing innovative cooling techniques.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113508"},"PeriodicalIF":6.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement of crystal-melt interface and reducing dislocation density of casting quasi-single crystalline silicon ingots using a novel thermal field
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI: 10.1016/j.solmat.2025.113550
Guanghui Wu , Xiaofang Qi , Yao Yang , Shanshan Tang , Jiancheng Li , Junlan Wang , Rugang Chen , Lijun Liu
{"title":"Improvement of crystal-melt interface and reducing dislocation density of casting quasi-single crystalline silicon ingots using a novel thermal field","authors":"Guanghui Wu ,&nbsp;Xiaofang Qi ,&nbsp;Yao Yang ,&nbsp;Shanshan Tang ,&nbsp;Jiancheng Li ,&nbsp;Junlan Wang ,&nbsp;Rugang Chen ,&nbsp;Lijun Liu","doi":"10.1016/j.solmat.2025.113550","DOIUrl":"10.1016/j.solmat.2025.113550","url":null,"abstract":"<div><div>The casting of quasi-single crystalline silicon (QSC-Si) is a technology with great potential for producing high-quality and low-cost crystals in the photovoltaic market. In this paper, we propose a new circular rotating thermal field structure in an industrial directional solidification (DS) furnace. The influence of crucible rotation speed on melt flow, thermal gradient, and crystal-melt interface was first investigated by using a global three-dimensional (3D) computational fluid dynamics model. Then the corresponding QSC-Si growth experiments in the rotating DS furnace were also carried out to obtain high-quality silicon ingots and verify the numerical model. The results show that the maximum deflection of 3D crystal-melt interface decreases from 19.0 mm to about 2.0 mm when the rotational speed increases from 0 rpm to 0.7 rpm. A higher rotational speed is beneficial for obtaining an almost highly flat and symmetrical 3D crystal-melt interface deflection in the rotating DS furnace due to a more uniform thermal gradient within the silicon region. However, the maximum crucible rotation speed should be restricted to less than 1.0 rpm since the rotating chassis has limited ability to bear the weight of the silicon feedstock. Then, the optimal crucible rotating speed with a value of 0.7 rpm was adapted to implement the QSC-Si growth experiments. The crystal quality of silicon ingots was analyzed by a photoluminescence (PL) detector. The experimental results indicate that the average percentage of dislocation defects for Ingot A (without crucible rotation speed) is 4.95 %, while that for Ingot B (with 0.7 rpm crucible rotation speed) is only 1.99 %. This research proposes an innovative approach for improving the uniformity of the 3D crystal-melt interface and decreasing the dislocation density in large-scale casting QSC-Si ingots.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113550"},"PeriodicalIF":6.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrogenation characteristics of p-type poly-Si passivating contacts on textured surface for double-sided TOPCon devices
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI: 10.1016/j.solmat.2025.113542
Anna Damm , Mathias Bories , Jan Benick , Mario Hanser , Armin Richter , Anyao Liu , Zhongshu Yang , Stefan Lange , Paul-Tiberiu Miclea , Jana-Isabelle Polzin
{"title":"Hydrogenation characteristics of p-type poly-Si passivating contacts on textured surface for double-sided TOPCon devices","authors":"Anna Damm ,&nbsp;Mathias Bories ,&nbsp;Jan Benick ,&nbsp;Mario Hanser ,&nbsp;Armin Richter ,&nbsp;Anyao Liu ,&nbsp;Zhongshu Yang ,&nbsp;Stefan Lange ,&nbsp;Paul-Tiberiu Miclea ,&nbsp;Jana-Isabelle Polzin","doi":"10.1016/j.solmat.2025.113542","DOIUrl":"10.1016/j.solmat.2025.113542","url":null,"abstract":"<div><div>An effective hydrogenation process for polycrystalline silicon based passivating contacts (TOPCon) is crucial to achieve a very high level of surface passivation. This work examines the hydrogenation characteristics of p-type TOPCon on textured surface morphology by applying dielectric layers such as AlO<sub>x</sub>, SiN<sub>x</sub> and stacks thereof followed by an activation in a furnace anneal or by fast-firing. In a direct comparison with n-type TOPCon, p-type TOPCon requires higher activation temperatures and a higher activation energy. For a successful integration of n-type and p-type TOPCon into bottom cell precursors with 726 mV implied <em>V</em><sub>oc</sub> for tandem devices, stacks featuring AlO<sub>x</sub> are beneficial to increase the thermal stability especially for n-type TOPCon. With regards to fast-firing processes, the influence of an additional pre- or post-annealing step is investigated. The peak firing temperature can significantly be reduced when applying an annealing step beforehand and a post-firing anneal improves surface passivation to recombination current densities <em>J</em><sub>0s</sub> as low as 7.9 fA/cm<sup>2</sup> for p-type TOPCon on textured surface which is one of the lowest reported in literature.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113542"},"PeriodicalIF":6.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Layer-separated treatment accelerating growth of P-type hydrogenated nanocrystalline silicon in SHJ cells
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI: 10.1016/j.solmat.2025.113543
Jialing Tao , Rui Jia , Ke Tao , Xing Li , BaoJie Yan , Baohai Yang , Yong Gao , Yongyao Li , Chunlin Guo , Jiawang Chen , Xiaoping Ouyang
{"title":"Layer-separated treatment accelerating growth of P-type hydrogenated nanocrystalline silicon in SHJ cells","authors":"Jialing Tao ,&nbsp;Rui Jia ,&nbsp;Ke Tao ,&nbsp;Xing Li ,&nbsp;BaoJie Yan ,&nbsp;Baohai Yang ,&nbsp;Yong Gao ,&nbsp;Yongyao Li ,&nbsp;Chunlin Guo ,&nbsp;Jiawang Chen ,&nbsp;Xiaoping Ouyang","doi":"10.1016/j.solmat.2025.113543","DOIUrl":"10.1016/j.solmat.2025.113543","url":null,"abstract":"<div><div>Doped nanocrystalline silicon has higher conductivity and lower parasitic absorption than doped amorphous silicon when used in photovoltaic heterojunction cells, which has been demonstrated in many previous studies. In this paper, the growth mechanism of p-type hydrogenated nanocrystalline silicon (p-nc-Si:H) thin films as doped emitter layer of silicon heterojunction (SHJ) solar cells is researched. Firstly, we focused on the effect of different PECVD deposition conditions on the growth rate and rapid crystallization of p-nc-Si:H given the frequency of 13.56 MHz, such as gas flow during deposition, chamber pressure, and power-density. We find that solar cell performs worse if deposition rate of p-nc-Si:H is dramatically increased. Then, we create layer-separated treatment method that balances growth rate and film quality through layered growth at different power levels. Finally, we designed layer-separated treatment for fast deposition rate of 2.11 Å/s with high crystallinity, then realized SHJ cell whose efficiency reached 25.88 %.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113543"},"PeriodicalIF":6.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic algorithm-driven design of NIR-Reflective transparent colored multilayers for enhanced radiative cooling
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-02-27 DOI: 10.1016/j.solmat.2025.113519
Guanghao Zhu, Zhen Yan, Xiaoyu Meng, Yeming Shi, Desong Fan
{"title":"Genetic algorithm-driven design of NIR-Reflective transparent colored multilayers for enhanced radiative cooling","authors":"Guanghao Zhu,&nbsp;Zhen Yan,&nbsp;Xiaoyu Meng,&nbsp;Yeming Shi,&nbsp;Desong Fan","doi":"10.1016/j.solmat.2025.113519","DOIUrl":"10.1016/j.solmat.2025.113519","url":null,"abstract":"<div><div>Passive radiative cooling is a promising path to tackle worsening energy crisis and global warming. Despite advancements in cooling mechanisms, material design, preparation technologies, and practical applications, the traditional white or silver appearance fails to meet both aesthetic and functional requirements, and the lack of transparency limits their applicability in scenarios where optical clarity is crucial. In this work, a genetic algorithm is employed to optimally design a dielectric/metal/dielectric/metal/dielectric stacked multilayer structure as a near-infrared (NIR) reflector, which is integrated with a plain glass substrate and an infrared high-emission PDMS layer on the outermost layer to form a transparent-colored radiative cooler (TCRC). By integrating a Fabry-Perot resonant cavity within the NIR reflector, we achieved customization of TCRC with varying colors. A grey TCRC exhibits optimal performance with visible transmissivity of 0.63, high NIR reflectivity of 0.88, and atmospheric transparency window emissivity of 0.95, all demonstrating angular independence (&lt;60°). In outdoor experiments during midday, TCRC achieves a room temperature reduction of 17.6 °C compared to the original glass. Additionally, TCRC exhibits an extraordinary potential for building energy-saving in most climate zones. This work provides a valuable reference for the further development of radiative cooling and the design of metamaterials.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"285 ","pages":"Article 113519"},"PeriodicalIF":6.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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