Pub Date : 2026-10-14Epub Date: 2026-09-23DOI: 10.1016/j.ijhydene.2026.157511
Bakhtiyar A. Najafov, Shukur N. Nasirov, Shamsi N. Nasirov, Konul M. Guliyeva, Fatima Sh. Zulfugarova
The results of studies on the physical properties of hydrogenated amorphous thin films of the alloys a-Si1-xGex:H, a-Si:H, and a-Ge:H, obtained by plasma-enhanced chemical vapor deposition, are presented. The optical constants (, , , ,T, ) and the band gap of the studied films ( eV) have been determined.Based on the investigation of the optical properties under various deposition conditions—including film thickness (, ), hydrogen partial pressure (), substrate temperature, and hydrogenation level of the alloys—the films were found to exhibit different structural phases. By varying the technological parameters, different structural phases of crystallites can also be obtained. The structure of the deposited a-Si_(1-x) Ge_x:H, а-Si:H, а-Ge:H is mixed (two-phase) and consists of nanocrystallites of nc “distributed” within an amorphous matrix. The concentration of carbon and hydrogen in the films depends on the deposition conditions and the initial gas mixture iH4, H2, GeH4. It was established that the film properties strongly depend on the composition and hydrogenation level. The amount of hydrogen atoms in the films was varied by adjusting the gas mixture composition and measured via infrared (IR) absorption spectroscopy for а-Si:H and а-Ge:H. films. The paper investigates the changes in the electrical and photoelectric characteristics and the effect of radiation on their properties. Solar cells based on а-Si:H and а-Si0,88Ge0,12:H films were fabricated in two-layer, three-layer, and two-plus-three-layer cascade structures; their performance characteristics were measured. It was found that for a cell area of 1,5 cm2, the maximum power conversion efficiency (η) reaches 18,9 %.
{"title":"Electronic, optical, and kinetic properties of silicon alloys and their application in renewable energy sources","authors":"Bakhtiyar A. Najafov, Shukur N. Nasirov, Shamsi N. Nasirov, Konul M. Guliyeva, Fatima Sh. Zulfugarova","doi":"10.1016/j.ijhydene.2026.157511","DOIUrl":"10.1016/j.ijhydene.2026.157511","url":null,"abstract":"<div><div>The results of studies on the physical properties of hydrogenated amorphous thin films of the alloys a-Si<sub>1-x</sub>Ge<sub>x</sub>:H, a-Si:H, and a-Ge:H, obtained by plasma-enhanced chemical vapor deposition, are presented. The optical constants (<span><math><mrow><mi>n</mi></mrow></math></span>, <span><math><mrow><msub><mi>n</mi><mn>1</mn></msub></mrow></math></span>, <span><math><mrow><mi>α</mi></mrow></math></span>, <span><math><mrow><mi>R</mi></mrow></math></span>,T, <span><math><mrow><mi>d</mi></mrow></math></span>) and the band gap of the studied films (<span><math><mrow><msub><mi>E</mi><mn>0</mn></msub><mo>=</mo><mn>1.05</mn><mo>÷</mo><mn>1.85</mn></mrow></math></span> eV) have been determined.Based on the investigation of the optical properties under various deposition conditions—including film thickness (<span><math><mrow><mi>d</mi></mrow></math></span>, <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub></mrow></math></span>), hydrogen partial pressure (<span><math><mrow><msub><mi>H</mi><mn>2</mn></msub></mrow></math></span>), substrate temperature, and hydrogenation level of the alloys—the films were found to exhibit different structural phases. By varying the technological parameters, different structural phases of crystallites can also be obtained. The structure of the deposited a-Si_(1-x) Ge_x:H, а-Si:H, а-Ge:H is mixed (two-phase) and consists of nanocrystallites of nc <span><math><mrow><mo>−</mo><mtext>Si</mtext><mo>:</mo><mi>H</mi></mrow></math></span> “distributed” within an amorphous matrix. The concentration of carbon and hydrogen in the <span><math><mrow><mi>a</mi><mo>−</mo><msub><mtext>Si</mtext><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub><msub><mtext>Ce</mtext><mi>x</mi></msub><mo>:</mo><mi>H</mi></mrow></math></span> films depends on the deposition conditions and the initial gas mixture <span><math><mrow><mi>S</mi></mrow></math></span> iH<sub>4</sub>, H<sub>2</sub>, GeH<sub>4</sub>. It was established that the film properties strongly depend on the composition and hydrogenation level. The amount of hydrogen atoms in the films was varied by adjusting the gas mixture composition and measured via infrared (IR) absorption spectroscopy for а-Si:H and а-Ge:H. films. The paper investigates the changes in the electrical and photoelectric characteristics and the effect of radiation on their properties. Solar cells based on а-Si:H and а-Si<sub>0,88</sub>Ge<sub>0,12</sub>:H films were fabricated in two-layer, three-layer, and two-plus-three-layer cascade structures; their performance characteristics were measured. It was found that for a cell area of 1,5 cm<sup>2</sup>, the maximum power conversion efficiency (η) reaches 18,9 %.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"277 ","pages":"Article 157511"},"PeriodicalIF":9.2,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149157666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-08-19Epub Date: 2026-07-30DOI: 10.1016/j.ijhydene.2026.156775
Yan Shen, Pan Wu, Chun Wang, Wei Yuan, Wanliang Yang, Xiao Shang
{"title":"Retraction notice to \"Electrodeposition of amorphous Ni–Fe–Mo composite as a binder-free and high-performance electrocatalyst for hydrogen generation from alkaline water electrolysis\" [International Journal of Hydrogen Energy 48 (2023) 33130-33138]","authors":"Yan Shen, Pan Wu, Chun Wang, Wei Yuan, Wanliang Yang, Xiao Shang","doi":"10.1016/j.ijhydene.2026.156775","DOIUrl":"10.1016/j.ijhydene.2026.156775","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"261 ","pages":"Article 156775"},"PeriodicalIF":9.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148734068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Retraction notice to \"The effect of GO content on the improvement of efficient water splitting applications in ZnO/GO nanocomposites\" [International Journal of Hydrogen Energy 84 (2024) 511-520]","authors":"Rasoul Azmayesh, Hamid Naghshara, Sajedeh Mohammadi Aref, Mohammad Ghafouri, Mahnaz Siahsahlan","doi":"10.1016/j.ijhydene.2026.156756","DOIUrl":"10.1016/j.ijhydene.2026.156756","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"261 ","pages":"Article 156756"},"PeriodicalIF":9.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148734067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-08-19Epub Date: 2026-07-29DOI: 10.1016/j.ijhydene.2026.156737
Mei Wang, Wei Zan
{"title":"Retraction notice to \"Hydrogen energy and regulatory policies: Economic pathways for accelerating China's decarbonization agenda\" [International Journal of Hydrogen Energy 110 (2024) 208-218]","authors":"Mei Wang, Wei Zan","doi":"10.1016/j.ijhydene.2026.156737","DOIUrl":"10.1016/j.ijhydene.2026.156737","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"261 ","pages":"Article 156737"},"PeriodicalIF":9.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148734069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Retraction notice to \"Sonochemically synthesized structures of manganese oxide (MO): A cathode material for oxygen reduction reaction in fuel cell applications\" [International Journal of Hydrogen Energy (52 (2024) 1254-1263]","authors":"Shahid Mehmood, Waqar Ahmed, Thilina Rajeendre Katugampalage, Usman Ahmed, Abdechafik Elharrak, Hanane Ait Ousaleh, Abdessamad Faik","doi":"10.1016/j.ijhydene.2026.156513","DOIUrl":"10.1016/j.ijhydene.2026.156513","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"257 ","pages":"Article 156513"},"PeriodicalIF":9.2,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148656754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-08-05Epub Date: 2026-07-16DOI: 10.1016/j.ijhydene.2026.156544
Muhammad Bilal Tahir, Tasmia Nawaz, Muhammad Sagir, Meshal Alzaid, Hussein Alrobei, Khurram Shahzad, Arshid Mahmood Ali, Shabbir Muhammad
{"title":"Retraction notice to \"Functionalized role of highly porous activated carbon in bismuth vanadate nanomaterials for boosted photocatalytic hydrogen evolution and synchronous activity in water\" [International Journal of Hydrogen Energy 46(2021) 39778-39785]","authors":"Muhammad Bilal Tahir, Tasmia Nawaz, Muhammad Sagir, Meshal Alzaid, Hussein Alrobei, Khurram Shahzad, Arshid Mahmood Ali, Shabbir Muhammad","doi":"10.1016/j.ijhydene.2026.156544","DOIUrl":"10.1016/j.ijhydene.2026.156544","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"257 ","pages":"Article 156544"},"PeriodicalIF":9.2,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148659224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-08-05Epub Date: 2026-07-16DOI: 10.1016/j.ijhydene.2026.156514
Ruiqian Su, Ye Xiao, Fadhila Hamza, Zokir Mamadiyarov, Abdul Wahab
{"title":"Retraction notice to \"Scaling up green hydrogen in China: Economic opportunities and challenges\" [International Journal of Hydrogen Energy 131 (2025) 60-69]","authors":"Ruiqian Su, Ye Xiao, Fadhila Hamza, Zokir Mamadiyarov, Abdul Wahab","doi":"10.1016/j.ijhydene.2026.156514","DOIUrl":"10.1016/j.ijhydene.2026.156514","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"257 ","pages":"Article 156514"},"PeriodicalIF":9.2,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148659223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-08-05Epub Date: 2026-07-16DOI: 10.1016/j.ijhydene.2026.156512
Hossam Donya, Salma Aman, Naseeb Ahmad, Hafiz Muhammad Tahir Farid, Taha Abdel Mohaymen Taha
{"title":"Retraction notice to \"Erratum Publication titled “Development of SnCo2O4 spinel supported on the rGO nanosheet with the improved electrochemical performance of OER activity [International Journal of Hydrogen Energy 79 (2024) 115-117]","authors":"Hossam Donya, Salma Aman, Naseeb Ahmad, Hafiz Muhammad Tahir Farid, Taha Abdel Mohaymen Taha","doi":"10.1016/j.ijhydene.2026.156512","DOIUrl":"10.1016/j.ijhydene.2026.156512","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"257 ","pages":"Article 156512"},"PeriodicalIF":9.2,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148656753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Retraction notice to \"Fabrication of 1D long chain-like metal porphyrin-based coordination complexes for high-efficiency hydrogen evolution and photoelectric response\" [International Journal of Hydrogen Energy 44 (2019) 18072-18082]","authors":"Xiaohan Li, Yanzhi Zhang, Weixuan Wang, Junjing Meng, Kuang Li, Wenxin Lin, Zhiqin Peng, Junmin Wan, Zhiwen Hu","doi":"10.1016/j.ijhydene.2026.156510","DOIUrl":"10.1016/j.ijhydene.2026.156510","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"257 ","pages":"Article 156510"},"PeriodicalIF":9.2,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148658991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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