Qutaiba Altwarah, Fahim Mahtab Abir, Christopher Prince, Donghyun Shin
{"title":"Exploring the impact of nanostructures on specific heat in nanoparticle-doped carbonate salts via MD simulations","authors":"Qutaiba Altwarah, Fahim Mahtab Abir, Christopher Prince, Donghyun Shin","doi":"10.1016/j.solmat.2025.113794","DOIUrl":"10.1016/j.solmat.2025.113794","url":null,"abstract":"<div><div>The enhancement of specific heat capacity in molten salts through nanoparticle addition has gained significant attention due to its potential to improve thermal energy storage efficiency. While earlier studies emphasized the role of nanoparticle dispersion, recent findings suggest that the formation of nanostructures over the surface of nanoparticles—observed through transmission electron microscopy—may be the primary mechanism behind these enhancements. In this work, molecular dynamics simulations were employed to investigate the effects of different nanoparticles—Al<sub>2</sub>O<sub>3</sub>, MgO, and CuO—when introduced into a eutectic mixture of Li<sub>2</sub>CO<sub>3</sub>-K<sub>2</sub>CO<sub>3</sub> (62:38 mol%). Various nanoparticle concentrations were tested through molecular dynamics simulation, with no significant increase in specific heat capacity observed. In fact, a slight decrease in specific heat capacity was noted at higher nanoparticle concentrations. However, the incorporation of lithium-rich solid nanostructures within the molten salt led to a pronounced 18–25 % improvement in specific heat capacity. These findings highlight the critical influence of nanostructure formation in enhancing the thermal properties of molten salt nanofluids which suggests that the formation of dendritic nanostructures on nanoparticle surfaces within the molten salt is the key factor driving these improvements in specific heat capacity.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113794"},"PeriodicalIF":6.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335729","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}
Bahri Eren Uzuner , Amir Zarean Afshord , Aranzazu Aguirre , Tom Aernouts , Görkem Gunbas , Yinghuan Kuang , Selcuk Yerci
{"title":"Picosecond laser processing enabled geometrical fill factors exceeding 98 % for inverted wide bandgap perovskite solar modules","authors":"Bahri Eren Uzuner , Amir Zarean Afshord , Aranzazu Aguirre , Tom Aernouts , Görkem Gunbas , Yinghuan Kuang , Selcuk Yerci","doi":"10.1016/j.solmat.2025.113793","DOIUrl":"10.1016/j.solmat.2025.113793","url":null,"abstract":"<div><div>Perovskite solar cells (PSCs) have exhibited significant advancements over the last decade, positioning them as the most promising candidate for the next-generation photovoltaic technology. Recently, significant efforts have been focused on the scale-up of PSCs towards enabling their commercialization. In this study, we performed electrical simulations to elucidate the balance between electrical and geometric losses in PSMs and verified our model by fabricating opaque (PSMs) and semi-transparent wide-bandgap perovskite solar modules (ST-PSMs). We showed that a P2 width of 20–50 μm provides an optimized P2 contact resistance, resulting in high geometric fill factor (GFF) and fill factor (FF), simultaneously. PSMs with an aperture area of 4.2 cm<sup>2</sup>, reaching a GFF of 98.4%, an FF of 81.5%, and a PCE of 17.78% were fabricated. To demonstrate the scalability of this approach, 16 cm<sup>2</sup> PSMs, reaching a GFF of 97.0%, an FF of 80.1%, and a PCE of 17.58% were fabricated. ST-PSMs (4 cm<sup>2</sup>) with >92.5% GFF, 81.4% FF, and 15.68% PCE were fabricated. We believe that the proposed optoelectronic model, along with its validation through the fabrication, exhibiting exceptionally high GFFs and FFs, elucidates the optical-electrical trade-off in PSMs and thus offers valuable insights for the design of highly efficient PSMs.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113793"},"PeriodicalIF":6.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144320942","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}
Daisuke Sato , Shunto Honda , Tomoya Tanimoto , Benjamin Lee , Steffen Geißler , Yukio Miyashita , Noboru Yamada
{"title":"Analysis of the bending and torsion strength of TOPCon solar cells cut by thermal laser separation technology: Advantages for vehicle-integrated photovoltaics","authors":"Daisuke Sato , Shunto Honda , Tomoya Tanimoto , Benjamin Lee , Steffen Geißler , Yukio Miyashita , Noboru Yamada","doi":"10.1016/j.solmat.2025.113796","DOIUrl":"10.1016/j.solmat.2025.113796","url":null,"abstract":"<div><div>The rapid deployment of photovoltaic (PV) systems in diverse applications is crucial for facilitating the transition to a carbon-neutral society. Vehicle-integrated PV (VIPV) technology shows promise in reducing CO<sub>2</sub> emissions within the transportation sector. However, several challenges must be addressed in the design and fabrication of VIPV modules, including compatibility with 3D curved vehicle bodies and durability under various mechanical loads encountered in operating environments—such as torsion of the targeted installation bodies—which differ from the requirements of conventional static PV modules. This study quantitatively analyzes the mechanical strength (bending and torsion) of tunnel oxide passivated contact (TOPCon) crystalline silicon solar cells cut using thermal laser separation (TLS) technology through comparison with identical solar cells cut using laser scribing and cleaving (LSC) technology. Ball-on-ring and four-line bend tests are conducted on state-of-the-art TOPCon half-cells, and their stress characteristics under spherical surface deformation are evaluated through finite element method simulations, revealing the optimal cell size (182 mm × 45.5 mm, aspect ratio = 4) for integration into a spherical surface with curvature radius of 1 m. In addition, the torsional strength of the TOPCon half-cells integrated into a polymer-based submodule is experimentally assessed, and the mechanism of crack initiation is identified. The results demonstrate the superior durability of TLS-cut cells against bending and torsion loads compared with LSC-cut cells, indicating their advantages for VIPV applications.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113796"},"PeriodicalIF":6.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329631","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}
Jeongwoo Lee , Mathew Farias , Hernan Aparicio , Haomin Li , Bardia Nabavi , Bo Zhao , Farid Ahmed , Peiwen Li , Ben Xu , Jianzhi Li
{"title":"Development of boron-enhanced inconel 718 with superior thermomechanical properties for high-temperature concentrated solar power applications","authors":"Jeongwoo Lee , Mathew Farias , Hernan Aparicio , Haomin Li , Bardia Nabavi , Bo Zhao , Farid Ahmed , Peiwen Li , Ben Xu , Jianzhi Li","doi":"10.1016/j.solmat.2025.113787","DOIUrl":"10.1016/j.solmat.2025.113787","url":null,"abstract":"<div><div>This study presents the characteristics of a modified boron-enhanced Inconel 718 for elevated mechanical strength and excellent optical properties for the next generation of solar receiver tube applications. While the standard in industry to produce high absorptive surfaces is through utilizing coatings, it becomes more challenging to maintain for high-temperature applications (>800 °C) for a long duration. The present study intends to directly increase the absorptivity of the Inconel 718 and bypass the need for coatings via Additive Manufacturing (AM) using boron-enhanced Inconel 718 powders. The effects of post-heat treatment and thermal cycling on microstructure, mechanical, and optical properties were analyzed systematically. The laser powder bed fusion (LPBF) technique enabled the boron content in Inconel 718 to increase up to 5000 ppm without microstructural defects (i.e., process defects). Increased boron content induced a larger amount of eutectic <span><math><mrow><mi>γ</mi></mrow></math></span> phase (involving Laves phases) development, leading to enhanced tensile strength and microhardness. Furthermore, it is observed that after heat treatment and thermal cycling, with high boron concentration the Laves phase morphology changed to a more interconnecting web-like structure. Thus, it is important to study the possible concentration of boron that can be added to the alloy using the LPBF process. A specially designed post-heat treatment was applied to remove the Laves phase with a long-striped shape and produce a smaller, granular-shaped Laves phase. Compared to pure Inconel 718, the boron-enhanced Inconel 718 showed that its microhardness increased to 36.6 % at the as-printed stage and up to 9.2 % after a proper heat treatment. Boron-doped Inconel 718 altered the optical properties by demonstrating that reflectance decreased by 10 %. This approach could lead to the development of more resilient and high-performance receiver tubes capable of withstanding extreme operating conditions, reducing maintenance costs, and extending the lifespan of CSP components. This study aims to remove the reliance on coatings with limited lifetimes by directly increasing the absorptivity of the utilized alloy. It is expected that limiting downtime that would otherwise be utilized for recoating solar absorber tubes could provide a more reasonable return on investment after considering operational expenses.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113787"},"PeriodicalIF":6.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329629","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}
M. Gamel , G. Rivera , G. López , M. Garín , I. Martín
{"title":"Phosphorus-doped nanocrystalline silicon as electron selective contact for epitaxial-free germanium thermophotovoltaic devices","authors":"M. Gamel , G. Rivera , G. López , M. Garín , I. Martín","doi":"10.1016/j.solmat.2025.113778","DOIUrl":"10.1016/j.solmat.2025.113778","url":null,"abstract":"<div><div>Crystalline germanium (c-Ge) has emerged as a promising, cost-effective absorber material for thermophotovoltaic (TPV) cells. As with any other photovoltaic (PV) device, the development of high-quality selective contacts is crucial. Moreover, to maintain a low-cost strategy any epitaxially-grown layer should be avoided. In this work, we investigate the deposition of n-type nanocrystalline silicon (nc-Si(n)) onto p-type c-Ge substrates using Plasma-Enhanced Chemical Vapor Deposition to form nc-Si(n)/c-Ge(p) heterojunctions that act as electron-selective contact. The deposition parameters, SiH<sub>4</sub>+PH<sub>3</sub> flow and RF power, are investigated and material characteristics are analyzed via Raman spectroscopy, Transfer Length Method and Hall effect measurement, confirming the nanocrystalline quality with high conductivity (42 Ω<sup>−1</sup> cm<sup>−1</sup>) and low activation energy (0.013 eV) of the nc-Si(n) layer. The interface quality of the heterojunction is evaluated by measuring the effective carrier lifetime, revealing that introducing a thin intrinsic amorphous silicon interlayer significantly enhances passivation but degrades carrier transport through the heterojunction. The developed nc-Si(n) layers are deposited onto c-Ge substrates with doping concentrations of 2 × 10<sup>15</sup> cm<sup>3</sup> (LD) and 2 × 10<sup>16</sup> cm<sup>3</sup> (HD) to fabricate c-Ge TPV cells with full rear aluminum contact. The results indicate that HD devices exhibit three times lower series resistance than LD devices, primarily due to reduced rear contact resistivity. On the other hand, LD devices show ∼5 % higher IR reflectance, attributed to lower free carrier absorption. Modelling the HD and LD TPV devices predicts TPV efficiencies of ∼6.5 % and ∼2.9 %, respectively.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113778"},"PeriodicalIF":6.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313242","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}
Stefan Lange , Sina Swatek , Marko Turek , Stephan Großer , Eve Krassowski , Jan Hoß , Saman Sharbaf Kalaghichi , Jan Lossen
{"title":"Efficiency improvement and microstructural working principle of LECO on the n-TOPCon rear side of industrial-like TOPCon solar cells","authors":"Stefan Lange , Sina Swatek , Marko Turek , Stephan Großer , Eve Krassowski , Jan Hoß , Saman Sharbaf Kalaghichi , Jan Lossen","doi":"10.1016/j.solmat.2025.113795","DOIUrl":"10.1016/j.solmat.2025.113795","url":null,"abstract":"<div><div>Laser-enhanced contact optimization (LECO) generating current-fired contacts (CFC) is one of the key technologies for production of high-efficiency industrial TOPCon solar cells. Its microstructural working principle on PERC solar cells is well-known and has recently been reported for the diffused boron emitter front side of industrial TOPCon solar cells. However, detailed n-TOPCon rear side specific investigations of the LECO process on contact properties are missing. In this contribution, we close that gap by first providing comprehensive performance data of TOPCon cells with diffused boron emitter front side and n-TOPCon rear side as industrial-like model samples. Second, we were able to identify current-fired contacts on n-TOPCon layers and investigate their nanostructure by employing a contrast etching technique, developing a large-area cross-section preparation approach and an adapted FIB preparation protocol. It becomes apparent that the contact formation significantly differs from non-LECO TOPCon contacts. Thirdly, we show that the efficiency improvement of the cells due to LECO is driven by reduction of Ag/poly-Si contact resistance and that LECO may lead to severe degradation of passivation quality if not optimized properly. Based on our findings, we developed a microstructural model of the working principle of LECO on n-type TOPCon layers.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113795"},"PeriodicalIF":6.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313241","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}
Guofa Yang , Zhizhang Xiang , Jiangtao Li , Weipeng Lu , Mabrouk Bakry , Abdelhamid El-Shaer , Yusheng Wang , Baoquan Sun
{"title":"Current distribution unevenness incurred uncertain contact resistivity of silicon heterojunction solar cells","authors":"Guofa Yang , Zhizhang Xiang , Jiangtao Li , Weipeng Lu , Mabrouk Bakry , Abdelhamid El-Shaer , Yusheng Wang , Baoquan Sun","doi":"10.1016/j.solmat.2025.113788","DOIUrl":"10.1016/j.solmat.2025.113788","url":null,"abstract":"<div><div>In crystalline silicon (c-Si) solar cells, achieving high efficiency requires high-quality passivation and carrier extraction at the metallization interface. The classical transfer length method (TLM) is commonly used to characterize the contact resistivity (ρ<sub>c</sub>) of c-Si solar cells. However, when extracting the ρ<sub>c</sub> of high-efficiency solar cells <em>via</em> the TLM method, the accuracy of the measurements is challenging due to the large variety of multiple tests, especially for silicon heterojunction (SHJ) solar cells. Moreover, a crowding effect at the metal and silicon interface incurs the possibility of an unreliable ρ<sub>c</sub> value in TLM measurement due to inhomogeneous current transport within the device, which impacts the uncertainty of the ρ<sub>c</sub> extraction. We unveiled the impact factors on measuring the ρ<sub>c</sub> between the silver (Ag) electrode and indium tin oxide (ITO) through experimental and simulation approaches in SHJ solar cells. The factors, including the probe numbers, contact positions, and the ITO sheet resistance, have been systematically investigated. Additionally, the related current density distributions under bias at different cross-sections within the ITO layer were explored through COMSOL simulations, providing a more intuitive explanation for the varieties of the measured contact resistance. This work offers insights into more precise ρ<sub>c</sub> measurements and favors high-performance metallization of SHJ solar cells.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113788"},"PeriodicalIF":6.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313239","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}
Anle Sun , Yuzhen Sun , Jingwei Zhao , Xiangzhi Song
{"title":"Characterization, experimental study and optimization of the performance of photovoltaic panel integrated with form-stable phase change materials and conductive ZnO/MnO2 nanoparticles","authors":"Anle Sun , Yuzhen Sun , Jingwei Zhao , Xiangzhi Song","doi":"10.1016/j.solmat.2025.113752","DOIUrl":"10.1016/j.solmat.2025.113752","url":null,"abstract":"<div><div>This study synthesized three form-stable eutectic phase change materials (FS-EPCMs) with varying docosane/coconut oil ratios (30/70, 50/50, and 70/30) to achieve different melting points and latent heats. To improve thermal conductivity, layer-by-layer synthesized ZnO/MnO<sub>2</sub> nanoparticles were incorporated into the FS-EPCMs. Response surface methodology (RSM) optimized PV panel temperature and electrical efficiency, with the coconut oil volume fraction, FS-EPCM thickness, and ZnO/MnO<sub>2</sub> weight fraction identified as significant factors (low p-values). ANOVA revealed key interactions influencing electrical efficiency, with high F-values (212.70 for temperature, 185.05 for efficiency) and low p-values (<0.0001) demonstrating model significance. High R<sup>2</sup> values (0.9974 for temperature, 0.9970 for efficiency) and adjusted R<sup>2</sup> values (0.9927, 0.9916) indicate strong model fit, further supported by \"Adequate Accuracy\" scores (49.87, 44.14). Incorporating ZnO/MnO<sub>2</sub> nanoparticles significantly enhanced PV panel cooling. Optimal performance was achieved with a FS-EPCM suspension comprising 45.30 % coconut oil, 55.70 % docosane, and 16.64 % wt ZnO/MnO<sub>2</sub> nanoparticles at a thickness of 2.477 cm, resulting in a panel temperature of 48.51 °C and an electrical efficiency of 13.11 %.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113752"},"PeriodicalIF":6.3,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313240","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}
{"title":"Quantifying the impact of energy matrices on life cycle cost assessment of N partly covered photovoltaic thermal concentrators coupled to conical solar still","authors":"Nandan kumar , Desh Bandhu Singh , Abhishek Saxena , Sumit Tiwari , Harender","doi":"10.1016/j.solmat.2025.113786","DOIUrl":"10.1016/j.solmat.2025.113786","url":null,"abstract":"<div><div>This study presents a comprehensive energy, exergy, and life cycle cost analysis of a novel conical solar still integrated with N photovoltaic thermal compound parabolic concentrators (N-PVT-CPC-CSS), aimed at addressing water scarcity using sustainable solar energy. A detailed mathematical model is developed and validated against experimental data, showing strong agreement with correlation coefficients of 0.97, 0.98, and 0.99 for water temperature, glass temperature, and freshwater yield, respectively. Annual performance metrics, including overall energy and exergy efficiencies, are computed using MATLAB for the climatic conditions of New Delhi, India. The system achieves notable thermal and exergy efficiencies of 56.51 % and 16.61 %, respectively. Key energy metrics such as energy payback time (EPT), energy production factor (EPF), and life cycle conversion efficiency (LCCE) are determined to be 1.134 years, 0.45 per year, and 0.4337, respectively. Comparative analysis reveals that the proposed N-PVT-CPC-CSS reduces EPT by 77.32 % and enhances LCCE by 90.77 % compared to a conventional N-PVT-CPC-coupled single slope solar still. These results demonstrate the superior performance and sustainability of the proposed system, aligning with global efforts toward clean water and energy as outlined in the United Nations Sustainable Development Goals.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113786"},"PeriodicalIF":6.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298012","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}
Heya Na, Cancan Zhang, Yuting Wu, Guoqiang Wang, Guang Bao, Yuanwei Lu
{"title":"Effect of purity on thermophysical properties, thermal stability and corrosivity of ternary mixed salts","authors":"Heya Na, Cancan Zhang, Yuting Wu, Guoqiang Wang, Guang Bao, Yuanwei Lu","doi":"10.1016/j.solmat.2025.113785","DOIUrl":"10.1016/j.solmat.2025.113785","url":null,"abstract":"<div><div>In this work, a ternary mixed salt of KNO<sub>3</sub>-NaNO<sub>2</sub>-Ca(NO<sub>3</sub>)<sub>2</sub> was prepared by high temperature melting method. The thermal physical properties of selected ternary mixed molten salt with 99 % and 98.5 % purity are investigated under thermal shock and constant high temperature conditions. The results show that the melting points of the initial ternary molten salt are 125.62 °C and 120.3 °C with 99 % and 98.5 % purity, while the decomposition temperatures are 601.5 °C and 593.2 °C. In comparison with the initial base salt, the melting point, initial crystal point and specific heat capacity of the 99 % and 98.5 % purity salt mixtures were found to increase by a maximum of 49 % under the 1000 h constant temperature test, and the thermal conductivity was reduced by a maximum of 12 % under the 500 times thermal shock condition. The annual corrosion rates after 1000 h of static corrosion in air are 0.051 mm y<sup>−1</sup> and 0.053 mm y<sup>−1</sup>. The decomposition temperatures are almost stable in all conditions. The impurities have a slight influence on the thermal stability of the mixed molten salts. This work provides valuable data and insights for the utilization of mixed ternary mixed molten salt.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113785"},"PeriodicalIF":6.3,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279131","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}