The lead researcher said the developed solar cell had achieved a highest power conversion efficiency of 0.61 per cent and demonstrated operational stability up to 250 hours. The result represents a proof of concept rather than a commercial product and highlights the potential of natural pigments for low-cost, low-impact energy harvesting. The team emphasised that performance optimisation and extended endurance testing remain priorities.
The dye was obtained from Gulabbas petals using standard extraction methods and incorporated into the photoactive layer to sensitise the cell to visible light. The research note explained basic characterisation of the pigment and device behaviour under laboratory illumination conditions, reporting reproducible but modest output levels. Attention was paid to material selection and simple fabrication techniques to keep processing environmentally benign.
Researchers at CUJ indicated ongoing work to improve efficiency and to study long-term stability under varied temperature and light regimes. The team intends to refine dye extraction, optimise interface layers and document performance over extended durations to assess practical viability. The team noted that collaboration with departmental colleagues and students supported the laboratory work. The project is presented as a contribution to sustainable materials research and to training students in renewable energy experimentation.
A team from the Department of Energy Engineering at the Central University of Jharkhand (CUJ) has developed an eco-friendly solar cell that uses a plant-based natural dye extracted from the petals of Mirabilis jalapa (commonly known as Gulabbas or Four O’Clock Flower). The researchers described the work as part of ongoing laboratory studies to explore sustainable alternatives to conventional photovoltaics. The device builds on dye-sensitised solar cell concepts adapted for locally available botanical materials. The lead researcher said the developed solar cell had achieved a highest power conversion efficiency of 0.61 per cent and demonstrated operational stability up to 250 hours. The result represents a proof of concept rather than a commercial product and highlights the potential of natural pigments for low-cost, low-impact energy harvesting. The team emphasised that performance optimisation and extended endurance testing remain priorities. The dye was obtained from Gulabbas petals using standard extraction methods and incorporated into the photoactive layer to sensitise the cell to visible light. The research note explained basic characterisation of the pigment and device behaviour under laboratory illumination conditions, reporting reproducible but modest output levels. Attention was paid to material selection and simple fabrication techniques to keep processing environmentally benign. Researchers at CUJ indicated ongoing work to improve efficiency and to study long-term stability under varied temperature and light regimes. The team intends to refine dye extraction, optimise interface layers and document performance over extended durations to assess practical viability. The team noted that collaboration with departmental colleagues and students supported the laboratory work. The project is presented as a contribution to sustainable materials research and to training students in renewable energy experimentation.
The awards will honour contractors and infrastructure companies delivering excellence in highway construction, safety, quality and project execution.RAHSTA Awards 2026 has officially opened nominations for the Contractors category, recognising the companies driving India’s highway and infrastructure expansion through world-class project execution and construction excellence.As India accelerates the development of expressways, tunnels, bridges and access-controlled corridors, contractors are playing a critical role in ensuring timely delivery, quality standards, safety compliance and sustaina..
India’s road construction sector is facing pressure from two sides. On one side is the West Asia crisis, which has pushed up the cost of oil-linked inputs such as bitumen, diesel and logistics. On the other is the persistent problem of negative bidding, where contractors are quoting sharply below project estimates to secure work.Together, these forces are creating a serious risk for project viability, execution quality and contractor survival.To read the full article Click Here ..
In construction disputes, claims for damages arising out of delay and prolongation often involve components such as head-office overheads, loss of profit and other indirect costs that are inherently difficult to quantify with precision. In such circumstances, tribunals and courts have, over time, accepted formula-based approaches such as the Hudson, Emden and Eichleay methods as tools to estimate such losses. To read the full article Click Here ..
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