Solar RRLPub Date : 2025-07-11DOI: 10.1002/solr.202500330
Al Amin, Connor Cagno, Yizhao Wang, Feng Yan
{"title":"A Review of Interface Engineering in Antimony Chalcogenide Thin Film Solar Cells","authors":"Al Amin, Connor Cagno, Yizhao Wang, Feng Yan","doi":"10.1002/solr.202500330","DOIUrl":"https://doi.org/10.1002/solr.202500330","url":null,"abstract":"<p>Antimony chalcogenides (Sb<sub>2</sub>X<sub>3</sub>, where X = S, Se, or S<sub>x</sub>Se<sub>1−x</sub>) are promising materials for thin-film solar cells due to their tunable bandgaps (1.1–1.8 eV), high absorption coefficients (>10<sup>5</sup> cm<sup>−1</sup>), nontoxicity, and earth-abundant composition. Recent advancements have achieved power conversion efficiencies (PCEs) exceeding 10%, with a record of 10.81% for Sb<sub>2</sub>(S, Se)<sub>3</sub> cells. However, interface-related issues, such as recombination losses and open-circuit voltage (<i>V</i><sub>OC</sub>) deficits, limit performance. Interface engineering strategies have significantly improved device efficiency and stability, including buffer layer optimization, defect passivation, surface treatments, post-processing, and doping. This review summarizes the latest developments in these areas, discusses ongoing challenges, and proposes future research directions to enhance the performance of antimony chalcogenide solar cells.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767384","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}
Solar RRLPub Date : 2025-07-11DOI: 10.1002/solr.202500365
Nils Straub, Wiebke Herzberg, Elke Lorenz
{"title":"HelioNet-IR: Combining Infrared and Visible Satellite Images for Solar Irradiance Forecasting in the Early-Morning Hours","authors":"Nils Straub, Wiebke Herzberg, Elke Lorenz","doi":"10.1002/solr.202500365","DOIUrl":"https://doi.org/10.1002/solr.202500365","url":null,"abstract":"<p>Forecasting of solar irradiance is crucial for integrating large shares of photovoltaics into the electricity grid. On timescales up to a few hours ahead, satellite-based (SAT) forecasts can significantly improve upon numerical weather predictions (NWPs). Conventional SAT methods derive cloud motion vectors (CMV) from consecutive images and extrapolate these to forecast future cloud situations. A semi-empirical version of the Heliosat method is widely used to retrieve global horizontal irradiance from visible-range satellite images via the cloud index (CI) as key parameter. When derived from the visible spectrum, CI computation is restricted to daylight hours, and before sunrise, no SAT forecast is available for the early morning. Here, we present HelioNet<sub>IR</sub>, a convolutional neural network with UNet architecture to forecast CI derived from Meteosat second generation images without strictly relying on sun illumination. To do so, input CI is complemented with two additional infrared channels. Forecasts of HelioNet<sub>IR</sub> are benchmarked against different CMV and NWP models and its purely CI-based predecessor HelioNet<sub>VIS</sub> over one full year (2024) with lead times (LTs) up to 4 hr and 15-min resolution. HelioNet<sub>IR</sub> can increase SAT-forecast availability from 22% to 100% for forecasts initiated before 8 AM. It notably outperforms NWP for <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>L</mi>\u0000 <mi>T</mi>\u0000 <mo>≤</mo>\u0000 <mn>150</mn>\u0000 <mtext> </mtext>\u0000 <mtext>min</mtext>\u0000 </mrow>\u0000 <annotation>$LTleq 150~ min$</annotation>\u0000 </semantics></math>, reducing root mean square error by over 40% within the first hour. During daytime, reference SAT models are outperformed for all LTs considered.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 16","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202500365","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905606","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}
Solar RRLPub Date : 2025-07-11DOI: 10.1002/solr.202500321
Maxim Simmonds, Ke Xu, Steve Albrecht, Lars Korte, Igal Levine
{"title":"Monitoring Charge Separation of Individual Cells in Perovskite/Silicon Tandems via Transient Surface Photovoltage Spectroscopy","authors":"Maxim Simmonds, Ke Xu, Steve Albrecht, Lars Korte, Igal Levine","doi":"10.1002/solr.202500321","DOIUrl":"https://doi.org/10.1002/solr.202500321","url":null,"abstract":"<p>Identification of charge carrier separation processes in perovskite/silicon tandem solar cells and recombination at buried interfaces of charge selective contacts are crucial for photovoltaic research. Here, intensity- and wavelength-dependent transient surface photovoltage (tr-SPV) is used to investigate slot-die-coated perovskite top layers deposited on n-type heterojunction silicon bottom cells. We show that using an appropriate combination of photon energy and/or bottom cell polarity, one can individually probe the buried interfaces of the bottom silicon cell or the perovskite's buried interfaces of a tandem solar cell: for excitation with higher energy photons, time delays before the onset of a strong SPV signal indicate significant hole minority drift before separation in the silicon bottom cells. Furthermore, symmetric bottom Si heterojunction solar cell stacks can serve to investigate the top perovskite stack including its junction to the bottom cell, unhampered by photovoltages from the silicon substrate. Thus, investigation of the buried interfaces in tandem devices using time-resolved surface photovoltage is found to yield valuable information on charge carrier extraction at buried interfaces and demonstrates its unique potential compared to more conventional approaches that rely on photoluminescence decay kinetics.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202500321","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767383","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}
Solar RRLPub Date : 2025-07-09DOI: 10.1002/solr.202500334
Younggon Son, Rin Jung, JeongEun Yoo, Kiyoung Lee
{"title":"Interfacial Charge Transfer Modulation via Phase Junctions and Defect Control in Spaced TiO2 Nanotubes for Enhanced Photoelectrochemical Water Splitting","authors":"Younggon Son, Rin Jung, JeongEun Yoo, Kiyoung Lee","doi":"10.1002/solr.202500334","DOIUrl":"https://doi.org/10.1002/solr.202500334","url":null,"abstract":"<p>Anodic titanium oxide (TiO<sub>2</sub>) nanotubes have garnered significant interest as photoelectrodes for photoelectrochemical (PEC) water splitting; however, their intrinsic structural and crystallographic limitations often lead to suboptimal PEC efficiency. Herein, spaced TiO<sub>2</sub> nanotubes (SPNTs) with enhanced intertubular spacing are utilized as photoelectrodes to improve light penetration and harvesting. Amorphous SPNTs are subjected to annealing under various atmospheric and thermal conditions to induce phase transitions, forming anatase, rutile, and anatase–rutile heterojunctions. The highest PEC performance is achieved with SPNTs annealed at 600°C in an argon atmosphere (Ar-600), exhibiting the formation of anatase–rutile heterojunctions and abundant oxygen vacancies (<i>V</i><sub>O</sub>). These features facilitate rapid charge transfer, enhancing PEC activity. Notably, Ar-600 demonstrates a photocurrent density of 0.34 mA cm<sup>−2</sup> at 1.23 V vs. reversible hydrogen electrode (RHE), an incident photon-to-current efficiency of 48% at 360 nm, a charge carrier density of 2.5 × 10<sup>19</sup> cm<sup>−3</sup>, and the lowest charge transfer resistance (<i>R</i><sub>ct</sub>) of 556 Ω. These values represent a 2.1-fold increase in photocurrent and a fourfold reduction in <i>R</i><sub>ct</sub> compared to conventional close-packed TiO<sub>2</sub> nanotubes. Furthermore, the Ar-600 electrode achieves a hydrogen production amount of 105.4 μL cm<sup>−2</sup> after 3 h of PEC operation, highlighting its potential for practical solar-to-hydrogen conversion.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202500334","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767379","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":"Monocrystalline CdSeTe/MgCdTe Double-Heterostructure Solar Cells","authors":"Zheng Ju, Xin Qi, Xiaoyang Liu, Razine Hossain, Aaron Wang, Tyler McCarthy, Allison McMinn, Yong-Hang Zhang","doi":"10.1002/solr.70054","DOIUrl":"https://doi.org/10.1002/solr.70054","url":null,"abstract":"<p><b>Solar Cells</b></p><p>In article number 2500138, Yong-Hang Zhang and co-workers demonstrated monocrystalline CdSeTe/MgCdTe double-heterostructure solar cells using n-type ITO and n-type semiconductor layers without any p-type doping. The ITO/MgCdTe interface functions as a hole contact. The characteristics of devices with high Se composition reveal signs of intermixing of zinc blende and wurtzite phases.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 13","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.70054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144574114","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":"Dual-Interface Passivation Strategy using Imidazolium Ionic Liquid for High-Performance CsPbI2Br Perovskite Photovoltaics","authors":"Ting Li, Jun Liu, Jincheng Huang, Hengzhi Zuo, Siyuan Zhang, Xinlong Zhang, Yifei Shi, Junjie Li, Jianlin Chen, Zhuoyin Peng, Guijun Li.","doi":"10.1002/solr.202500351","DOIUrl":"https://doi.org/10.1002/solr.202500351","url":null,"abstract":"<p>Interfacial defects at the junction between CsPbI<sub>2</sub>Br perovskite layer and the electron transport layer triggered significant nonradiative recombination and charge carrier loss, severely compromising the efficiency and stability of CsPbI<sub>2</sub>Br perovskite solar cells (PSCs). Herein, the 1-tetradecyl-3-methylimidazole bromide salt (TMBr) is introduced as a dual-interface passivator to mitigate defects at both the SnO<sub>2</sub> surface and buried CsPbI<sub>2</sub>Br interface. Systematic characterizations revealed that TMBr synergistically enhances charge transport dynamics through two distinct mechanisms: 1) suppression of under-coordinated Sn<sup>4+</sup> cations and oxygen vacancies (<i>V</i><sub>O</sub>) at the SnO<sub>2</sub> interface, leading to improved conductivity and electron mobility; and 2) passivation of Pb-I antisite defects and undercoordinated halide ions (Br<sup>−</sup>/I<sup>−</sup>) within the buried perovskite interface, enabling the formation of high-quality CsPbI<sub>2</sub>Br films. Consequently, the TMBr-modified device achieved a remarkable open-circuit voltage (<i>V</i><sub>OC</sub>) of 1.324 V, and thus, associated with a high PCE of 17.27%, along with long-term stability, retaining 95.5% of its initial PCE after 720 h under ambient conditions (∼25°C and ∼25% RH), underscoring the critical role of interfacial defect management in advancing PSC performance.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767501","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":"Synergistic Strategy of W18O49/Biocl Dioxygen Vacancy Promotes Photocatalytic Carbon Dioxide Reduction and Toluene Oxidation Performance","authors":"Xinyue Peng, Mai Zhang, Xue Zhang, Cong Luo, Xiaolei Hu, Jianjun Liao, Cheng Li, Linlin Zhang","doi":"10.1002/solr.202500306","DOIUrl":"https://doi.org/10.1002/solr.202500306","url":null,"abstract":"<p>Dual defects can synergistically react with molecules in space and time, thereby facilitating the activity and directional selectivity of photocatalytic reactions. The W<sub>18</sub>O<sub>49</sub>/BiOCl heterojunction photocatalyst with double oxygen vacancies was fabricated via a straightforward hydrothermal approach. The objective was to attain highly effective CO<sub>2</sub> reduction and the selective oxidation of toluene. The existence of a firmly bonded contact interface and oxygen vacancies in the W<sub>18</sub>O<sub>49</sub>/BiOCl heterojunction has been demonstrated to effectively promote the rapid separation and transportation of photogenerated electron holes. Upon exposure to visible light, the W<sub>18</sub>O<sub>49</sub>/BiOCl heterojunction exhibits excellent CO<sub>2</sub> reduction ability, reducing CO<sub>2</sub> to CO (87.4 μmol g<sup>−1</sup> h<sup>−1</sup>), and efficiently oxidizing toluene to benzaldehyde (1582.3 μmol g<sup>−1</sup> h<sup>−1</sup>), with a selectivity of about 86%. This research can offer guidance for the rational design of highly efficient bifunctional catalysts that combine the reduction of CO<sub>2</sub> with selective organic conversion.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767500","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}
Solar RRLPub Date : 2025-07-04DOI: 10.1002/solr.202500331
Xiuying Yang, Chaowen Lan, Xixi Ma, Xiaohui Yang, Ming Wang, Binxun Yu, Jing Gou, Shengzhong Frank Liu
{"title":"Multisite Synergistic Defect Passivation via Pyridine Molecules for High-Efficiency and Stable Perovskite Solar Cells","authors":"Xiuying Yang, Chaowen Lan, Xixi Ma, Xiaohui Yang, Ming Wang, Binxun Yu, Jing Gou, Shengzhong Frank Liu","doi":"10.1002/solr.202500331","DOIUrl":"https://doi.org/10.1002/solr.202500331","url":null,"abstract":"<p>A critical challenge in achieving high-efficiency and stable metal-halide perovskite solar cells (PSCs) is trap-mediated nonradiative charge recombination from charged defects at surfaces and grain boundaries. While molecular passivation strategies have been widely explored, developing a universal passivator capable of simultaneously addressing multiple defect types—such as undercoordinated Pb<sup>2</sup><sup>+</sup>, halide vacancies I<sup>−</sup>, and organic cation disorders—remains a significant hurdle. An ideal passivator should incorporate multiple-functional groups that can interact synergistically with diverse defects. In this work, multifunctional pyridine-based molecules have emerged as promising candidates due to their dual role in modulating perovskite crystallization and passivating defects. Notably, 2-mercapto-5-trifluoromethylpyridine (MPTM) exhibits a unique triple-functional passivation mechanism: the thiol and pyridinic nitrogen groups coordinate with undercoordinated Pb<sup>2</sup><sup>+</sup> ions, mitigating deep-level traps; the trifluoromethyl functional group forms hydrogen bonds with FA<sup>+</sup>, suppressing its migration; and in polar solutions, MPTM undergoes isomerization to a zwitterionic thiocarbonyl imide, enabling simultaneous interactions with I<sup>−</sup> vacancies, FA<sup>+</sup>, and Pb<sup>2</sup><sup>+</sup>. This synergistic defect suppression minimizes nonradiative recombination, leading to enhanced charge transport and extraction. As a result, MPTM-passivated devices achieve a champion power conversion efficiency (PCE) of 24.32%. Furthermore, the optimized unencapsulated PSCs demonstrate outstanding environmental stability, retaining >91% of their initial PCE after 66 days in humid air.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 16","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905373","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}
Solar RRLPub Date : 2025-07-04DOI: 10.1002/solr.202500291
Willemijn H. M. Remmerswaal, Lana M. Kessels, Bruno Branco, Giel G. F. van Huisseling, Dong Zhang, Martijn M. Wienk, René A. J. Janssen
{"title":"Analysis of Interfacial Losses and Passivation Strategies for Narrow-Bandgap Perovskite Solar Cells","authors":"Willemijn H. M. Remmerswaal, Lana M. Kessels, Bruno Branco, Giel G. F. van Huisseling, Dong Zhang, Martijn M. Wienk, René A. J. Janssen","doi":"10.1002/solr.202500291","DOIUrl":"https://doi.org/10.1002/solr.202500291","url":null,"abstract":"<p>Tin-lead (Sn–Pb) halide perovskites hold promise as narrow-bandgap semiconductors in future solar cells. Currently, non-radiative recombination induced open-circuit voltage losses limit their full potential. To determine their origin, intrinsic and interfacial non-radiative recombination losses are investigated for Sn–Pb perovskite solar cells, and the effects of bulk and surface passivation strategies are assessed. Absolute photoluminescence is used to determine the quasi-Fermi level splitting in perovskite layers, with and without charge transport layers, and distinguish bulk and interface contributions. The intrinsic losses in the perovskite semiconductor and at its interfaces with the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and C<sub>60</sub> charge transport layers contribute significantly to the overall voltage deficit. Incorporating glycine hydrochloride as bulk additive during processing reduces the non-radiative losses in the absorber. Likewise, surface passivation with alkane-diammonium iodides or cadmium iodide mitigates the non-radiative recombination induced by the C<sub>60</sub> electron transport layer by eliminating direct contact with the perovskite semiconductor. While each of these passivation strategies are beneficial, shortcomings remain in implementing them in actual devices because effective passivation of the perovskite can limit the efficient extraction of charges.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202500291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767551","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}
Solar RRLPub Date : 2025-07-04DOI: 10.1002/solr.202500278
Nikita Chaudhary, Ayushi Jain, Mansi Pahuja, Subhabrata Das, Jyoti Jyoti, E. M. Harini, Seema Rani, Shumile Ahmed Siddiqui, Daya Rani, Mohd Afshan, Soumyadip Sharangi, Chandan Bera, Kaushik Ghosh
{"title":"NiO–NiTiO3 Heterojunction for Enhanced Solar Cell Efficiency and Hydrogen Evolution: A Stable All-Oxide Approach","authors":"Nikita Chaudhary, Ayushi Jain, Mansi Pahuja, Subhabrata Das, Jyoti Jyoti, E. M. Harini, Seema Rani, Shumile Ahmed Siddiqui, Daya Rani, Mohd Afshan, Soumyadip Sharangi, Chandan Bera, Kaushik Ghosh","doi":"10.1002/solr.202500278","DOIUrl":"https://doi.org/10.1002/solr.202500278","url":null,"abstract":"<p>Green energy production has become necessary in order to achieve sustainable development goals and transition toward a green economy where solar energy and hydrogen fuel serve as the forthcoming energy sources. In this aspect, perovskite materials find potential applications in the generation of green hydrogen as well as solar energy. While various halide and lead-based perovskites have shown promising results in photovoltaic technology, their stability and toxicity issues hinder the commercialization of the technology. NiTiO<sub>3</sub> is a stable n-type perovskite oxide with a broad absorption range from ultraviolet to visible near-infrared range. However, the application of oxide perovskite materials has not been explored extensively. The creation of p–n heterojunction in NiO–NiTiO<sub>3</sub> enhances photogenerated charge carrier separation. The interface offers a stronger interaction facilitated through Ti<span></span>O bond formation and a characteristic bandgap of 1.27 eV, lower than the individual layers, facilitating charge transfer. This accompanied with the higher density of states in the heterojunction improved the efficiency of NiTiO<sub>3</sub> based solar cell to 4.25% as compared to the previously reported 1.66%. Additionally, the all-oxide device provides 87% efficiency retention after 6 months. Exploring the versatility of this heterojunction, its application in green hydrogen generation has been studied, where the NiO–NiTiO<sub>3</sub> thin-film catalyst yielded an overall hydrogen production of 5.04 mmol g<sup>−1</sup>/1.68 mmol g<sup>−1</sup> h<sup>−1</sup> of the catalyst. Therefore, all oxide perovskite heterojunction serves as a prospective candidate for the advancement of renewable energy generation techniques.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 15","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767550","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}