Synergistic effect of anthocyanin-rich Euphorbia milii dye and TiCl4-passivation on 1D TiO2-based DSSCs Kumar Vaisno Srivastava, Anjesh Srivastava, Raj Kumar Maurya, Yatendra Pal Singh, Abhishek Srivastava Next Materials, 2025 This study presents the development of eco-sustainable dye-sensitized solar cells (DSSCs) incorporating anthocyanin-rich Euphorbia milii flower (EMF) extract as a natural photosensitiser and hydrothermally synthesised one-dimensional TiO 2 nanorods (TNRs) as photoanodes. TNR photoanodes fabricated with varying hydrothermal durations (6, 8, and 10 h) were systematically evaluated. Among them, TNR 8 exhibited the highest power conversion efficiency (PCE) of 1.12 %, attributed to its optimized surface morphology, enhanced dye-loading capacity, and superior charge transport. The EMF dye demonstrated strong absorption in the 400–600 nm range and successfully anchored onto TNRs through -COOH and -OH functional groups, as confirmed by FTIR analysis. To further improve photovoltaic performance, TiCl 4 surface passivation was applied to the TNR 8 photoanode. This treatment resulted in a uniform TiO 2 overlayer that passivated surface trap states, enhanced crystallinity, and improved dye adsorption, collectively suppressing charge recombination and promoting efficient electron transport. Consequently, the passivated p- TNR 8 photoanode achieved a significantly enhanced PCE of 2.60 %, with a short-circuit current density (J SC ) of 17.24 mA cm −2 and an open-circuit voltage (V OC ) of 499 mV. The notable ∼132 % increase in efficiency is ascribed to reduced interfacial recombination resistance (R Ct : from 23.32 to 13.42 Ω·cm 2 ) and a red-shifted absorption onset (E g : from 3.07 to 3.02 eV) resulting from improved electronic interactions at the TiO 2 /dye interface. Compared to expensive commercial dyes such as N719 (> $1000/g), the EMF dye offers a low-cost (< $1/g), environmentally benign, and scalable alternative. These results demonstrate the practical viability of natural dye-sensitized DSSCs and highlight the significance of photoanode engineering and interfacial optimization in advancing green and affordable photovoltaic technologies for sustainable energy applications. Schematic summary of the eco-friendly DSSC development using anthocyanin-rich Euphorbia milii extracts and hydrothermally synthesised TiO 2 nanorods (TNR 6–10 ), highlighting the champion performance of the TiCl 4 -passivated TNR 8 photoanode with a peak PCE of 2.60 %. • One-dimensional TiO 2 nanorods (TNR 6-10 ) and TiCl 4 -passivated TNR 8 were explored as DSSC photoanodes. • Anthocyanin-rich Euphorbia Milii dyes (400-600 nm absorption) were used in FTO/TNR 6-10 /EMF/( I − / I 3 − )/carbon-DSSC fabrication. • TNR 8 -based DSSC achieved the highest PCE of 1.12%, with VOC of 545 mV and JSC of 4.70 mA cm -2 . • TiCl 4 -passivated TNR 8 photoanodes enhanced PCE to 2.60%, showing ~132% performance improvement. • TNR 6 and TNR 10 photoanodes delivered lower efficiencies of 0.26% and 0.59% due to poor charge transport.
Frequency of Occurrence of Solar Plasma Disturbances in Interplanetary Space Munendra Singh, Y. P. Singh Research in Astronomy and Astrophysics, 2025 Major solar plasma disturbances are subjected to Lomb–Scargle periodogram and wavelet analysis to determine the occurrence frequency. These disruptions include interplanetary coronal mass ejection, sudden storm commencement, high-speed streams, corotating interaction regions, interplanetary shocks and Forbush decreases. We included information on all of the aforementioned solar disturbances for the last six solar cycles, from 1965 to 2023, for this study. Our findings reveal some intriguing and noteworthy results that clearly distinguish between even and odd-numbered solar cycles. The study suggests that the Sun behaves differently in odd and even-numbered solar cycles as it comes from the massive solar eruptions. During even-numbered solar cycles, variations with a period of ∼44 days are prominently observed in addition to solar rotation (∼27 days) and extended solar (∼36 days) rotation. However, in addition to solar rotation, prolonged solar rotation, and periods of around 44 days, we also detect a number of intermittent changes with nearly comparable amplitude during the odd-numbered solar cycles. The findings also demonstrate that, in contrast to odd-numbered solar cycles, the emissions rate of these disruptions is more distinct and predictable during even-numbered solar cycles.
1D TiO2 photoanodes: a game-changer for high-efficiency dye-sensitized solar cells Kumar Vaisno Srivastava, Pooja Srivastava, Akancha Srivastava, Raj Kumar Maurya, Yatendra Pal Singh, Abhishek Srivastava Rsc Advances, 2025 A schematic illustrating the initial characteristics, phases, nanostructures, and potential future applications of 1D TiO2 photoanodes.
EMERGING FRONTIERS: HARNESSING THE POTENTIAL OF SMART MATERIALS Meenu Rani, Y. P. Singh, Sheela Devi, Shilpi Jindal, Amit Kumar Smart Materials and Applications, 2025 Smart materials belong to a class of materials which is enlisted in advanced materials. They are also known as intelligent materials. Smart materials are increasingly gaining popularity in modern society due to their crucial role and unique properties, surpassing traditional materials. These materials are capable of adapting to their environment by reacting intelligently to external stimuli. They can adjust to specific triggers and can be categorized in various ways, such as different types of responses to environmental stimuli including physical, chemical, and biological stimuli. Many smart materials, such as piezoelectric materials and shape memory alloys, are currently in 4use, with new discoveries expected as a result of ongoing intensive research and development efforts. Smart materials are utilized in a variety of sectors such as medical, robotics, nuclear power, military, aerospace technology, civil engineering, construction, general industries, biomedical industries, and seismic applications. These materials offer inherent properties such as sensing, information processing capabilities, control, and actuation, allowing for the creation of smart systems with multifunctional components. They are equipped with features like self-restoration, self-degradation, and self-diagnosis; thus enhancing their functionality. This chapter explores different types of smart materials with their properties and applications across various industries.
Characteristic features of ICMEs associated with big storms in geomagnetic activity and large Forbush decreases in cosmic ray intensity Indian Journal of Radio and Space Physics, 2010
Study of cosmic-ray depressions due to corotating high-speed solar-wind streams and their dependence on solar polarity 29th International Cosmic Ray Conference Icrc 2005, 2005
RECENT SCHOLAR PUBLICATIONS
Capturing protein-protein interactions in plants: recent advances, challenges, and opportunities B Dickey, Y Singh, S Maharjan, Y Qiu, S Chen Frontiers in molecular biosciences 13, 1777595 , 2026 2026
A multi-parametric comparative study of Solar Cycles 23, 24, and 25 using solar and interplanetary disturbance indices M Singh, YP Singh Astrophysics and Space Science 371 (3), 35 , 2026 2026 Citations: 1
The Purified Fraction of Persicaria capitata Flowers Attenuates Proliferation in A-431 Cell Lines V Arya, AK Gill, Y Singh, A Acharya, A Jamwal Pharmacognosy Magazine 22 (1), 311-320 , 2026 2026 Citations: 1
Comparison of egg laying behaviour and production performance between ‘conventional nest box’and ‘novel roll away egg nest’system in backyard poultry rearing A PRAKASH, A SHARMA, Y SINGH, S KASWAN Indian Journal of Animal Sciences 95 (9) , 2026 2026
Pharmacognostic Evaluation of Parmelia sulcata Taylor and its Cytotoxic Effects on a Glioblastoma Cell Line V Arya, RK Parmar, AK Gill, A Acharya, Y Singh, A Jamwal Journal of Pharmacology and Pharmacotherapeutics 16 (4), 412-421 , 2025 2025
CIeaD: A Complementary CID and EAD Mass Spectral Library for Phytochemicals Y Singh, PC Norris, S Maharjan, J Gillespie, C Ferrante, Z Ibrahim, ... Journal of the American Society for Mass Spectrometry 37 (1), 8-12 , 2025 2025 Citations: 1
Lyophilization Improved Efficiency in 2‐in‐1 Metabolite and Protein Extraction for Plant Multi‐Omics Q Guan, T Akter, Y Singh, B Tan, S Chen Proteomics 25 (23), 37-45 , 2025 2025
The immune receptor XA21 causes semi-male sterility and grain loss in rice. BT Franceschi, S Vergish, Y Singh, JL Li, Shamsunnaher, GL Ding, ... 2025
The immune receptor XA21 causes semi-male sterility and grain loss in rice B de Toledo Franceschi, S Vergish, Y Singh, JL Li, Shamsunnaher, ... Frontiers in Plant Science 16, 1673821 , 2025 2025 Citations: 1
Unraveling the molecular choreography of C 3 to CAM transition in Mesembryanthemum crystallinum using phosphoproteomics B Tan, N Perron, Q Guan, D Zhu, Y Singh, C Dufresne, S Chen The Plant Journal 124 (4), e70587 , 2025 2025 Citations: 3
Stereotactic Radiotherapy for Liver Metastases cancer Using Flattening Filter-Free Beams: Dosimetric and Technical Considerations R Kumar, S Kumar, YP Singh Journal of Pharmaceutical Sciences 1 (10) , 2025 2025
Emerging Frontiers: Harnessing the Potential of Smart Materials M Rani, YP Singh, S Devi, S Jindal, A Kumar Smart Materials and Applications, 3-25 , 2025 2025
Short-term periods in the occurrence of ICME, HSS, CIR, and IP shock events in interplanetary space YP Singh, B Badruddin Journal of Atmospheric and Solar-Terrestrial Physics, 106660 , 2025 2025 Citations: 2
Enhanced Structural and Optical Properties of Iron-Doped Silver Sodium Niobate Perovskites: A Lead-Free Alternative for Optoelectronic Applications M Rani, YP Singh, S Kumar, KK Kushwah, S Jindal Ceramics International , 2025 2025
Synergistic effect of anthocyanin-rich Euphorbia milii dye and TiCl4-passivation on 1D TiO2-based DSSCs KV Srivastava, A Srivastava, RK Maurya, YP Singh, A Srivastava Next Materials 9, 100945 , 2025 2025 Citations: 3
Tailoring structural and electrical properties in cobalt-doped Ag0. 2Na0. 8NbO3 ceramics for advanced electronic applications M Rani, YP Singh, S Chaudhary, S Jindal Materials Chemistry and Physics 342, 130953 , 2025 2025
Comparison of egg laying behaviour and production performance between'conventional nest box'and'novel roll away egg nest'system in backyard poultry rearing A Sharma, A Prakash, Y Singh, S Kaswan, Priya INDIAN JOURNAL OF ANIMAL SCIENCES 95 (9), 810-816 , 2025 2025
Exploring the pharmacological effect of cardiac glycosides against hepatocellular carcinoma using network pharmacology Y Singh, AK Jajoriya, S Kanojiya Pharmacological Research-Natural Products 8, 100307 , 2025 2025 Citations: 1
Frequency of Occurrence of Solar Plasma Disturbances in Interplanetary Space M Singh, YP Singh Research in Astronomy and Astrophysics 25 (3), 035021 , 2025 2025 Citations: 2
Two-Dimensional Liquid Chromatography Advancing Y Singh, S Chen Relevant Applications of High-Performance Liquid Chromatography in Food … , 2025 2025
MOST CITED SCHOLAR PUBLICATIONS
Relationship between morphology and properties of polyamide-6 low-density polyethylene blends: effect of the addition of functionalized low-density polyethylene H Raval, S Devi, YP Singh, MH Mehta Polymer 32 (3), 493-500 , 1991 1991 Citations: 86
Statistical considerations in superposed epoch analysis and its applications in space research YP Singh Journal of atmospheric and solar-terrestrial physics 68 (7), 803-813 , 2006 2006 Citations: 60
Temporal variations of short-and mid-term periodicities in solar wind parameters and cosmic ray intensity YP Singh, S Gautam Journal of atmospheric and solar-terrestrial physics 89, 48-53 , 2012 2012 Citations: 42
Quantitative estimation of berberine in roots of different provenances of Berberis aristata DC by HPLC and study of their antifungal properties A Rajasekaran, R Pokhriyal, Y Singh Pharmacognosy Magazine 5 (20), 355 , 2009 2009 Citations: 40
1D TiO 2 photoanodes: a game-changer for high-efficiency dye-sensitized solar cells KV Srivastava, P Srivastava, A Srivastava, RK Maurya, YP Singh, ... RSC advances 15 (7), 4789-4819 , 2025 2025 Citations: 39
Geoeffectiveness of magnetic cloud, shock/sheath, interaction region, high-speed stream and their combined occurrence YP Singh Planetary and Space Science 57 (3), 318-331 , 2009 2009 Citations: 37
Effect of reduced tillage on soil physical properties, root growth and grain yield in rice wheat system. PK Singh, Y Singh 1996 Citations: 36
Prominent short-, mid-, and long-term periodicities in solar and geomagnetic activity: Wavelet analysis YP Singh Planetary and Space Science 96, 120-124 , 2014 2014 Citations: 35
Effects of interplanetary magnetic clouds, interaction regions, and high‐speed streams on the transient modulation of galactic cosmic rays YP Singh, Badruddin Journal of Geophysical Research: Space Physics 112 (A2) , 2007 2007 Citations: 33
Solar modulation of galactic cosmic rays during the last five solar cycles M Singh, YP Singh Journal of atmospheric and solar-terrestrial physics 70 (1), 169-183 , 2008 2008 Citations: 32
Modulation loops, time lag and relationship between cosmic ray intensity and tilt of the heliospheric current sheet Badruddin, M Singh, YP Singh Astronomy & Astrophysics 466 (2), 697-704 , 2007 2007 Citations: 31
Short-and mid-term oscillations of solar, geomagnetic activity and cosmic-ray intensity during the last two solar magnetic cycles YP Singh Planetary and Space Science 138, 1-6 , 2017 2017 Citations: 30
Electromagnetics for electrical machines SK Mukerji, AS Khan, YP Singh CRC Press , 2018 2018 Citations: 21
Study of electrolyte disturbance in chronic liver disease patients attending a hospital in Kumaon region Y Singh, D Nagar, M Singh, M Maroof Journal of family medicine and primary care 11 (8), 4479-4482 , 2022 2022 Citations: 20
Study of the solar rotational period and its harmonics in solar activity, interplanetary, geomagnetic, and cosmic ray intensity indicators during solar polarity reversal periods YP Singh, Badruddin Solar Physics 294 (3), 27 , 2019 2019 Citations: 19
Grafting of low density poly (ethylene) with butyl acrylate: Synthesis and characterisation H Raval, YP Singh, MH Mehta, S Devi Polymer international 24 (2), 99-104 , 1991 1991 Citations: 18
Leishmania donovani chaperonin TCP1γ subunit protects miltefosine induced oxidative damage S Yadav, V Ali, Y Singh, S Kanojia, N Goyal International journal of biological macromolecules 165, 2607-2620 , 2020 2020 Citations: 17
Solar-rotational oscillation and its harmonics in the solar-wind, geomagnetic and cosmic ray particles during the last two solar minima YP Singh, Badruddin Astrophysics and Space Science 359 (2), 60 , 2015 2015 Citations: 17
PankajSingh. Drug repurposing in Oncology: Opportunities and challenges A Dubey, D Tiwari, Y Singh, O Prakash Int J of Allied Med Sci and Clin Res 9 (1), 68-87 , 2021 2021 Citations: 16
Evaluation of genetic variation and phylogenetic relationship among north Indian cattle breeds R Sharma, AK Pandey, Y Singh, B Prakash, BP Mishra, P Kathiravan, ... Asian-Australasian Journal of Animal Sciences 22 (1), 13-19 , 2009 2009 Citations: 16
