Padmanabhan K. Nair

Thin-film solar cells of thermally evaporated antimony sulfide selenide absorbers with ZnS–CdS window layers

Fabiola De Bray Sánchez, M. T. S. Nair, Padmanabhan K. Nair

Abstract Characteristics of solar cells of antimony sulfide selenide thin-film absorbers produced by vacuum thermal evaporation with chemically deposited ZnS/CdS window layers are presented. The solar cell, SnO2:F (FTO)/ZnS/CdS/Sb2S0.44Se2.56/C (Cell-A) with ZnS(50 nm)/CdS(65 nm) window layers and Sb2S0.44Se2.56 (450 nm), has shown …

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Light modulation through spectrally selective materials in solar dryers for the retention of bio-compounds

Anabel López‐Ortiz, Azucena Silva-Cortés, A. Balbuena Ortega, Jorge Escobar et autres

In this work, we explore the requirements for preserving natural pigments such as anthocyanins, carotenoids, and chlorophylls after solar drying. We focus primarily on how to modulate lighting conditions inside the drying chamber of solar dryers using spectrally selective glazing materials: Green …

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Antimony sulfide selenide thin film solar cells with comparable characteristics prepared via a choice of chemical deposition or vacuum thermal evaporation

Priyanka Bamola, Fabiola De Bray Sánchez, M. T. S. Nair, Padmanabhan K. Nair

Antimony sulfide selenide solar cells, FTO/CdS/Sb 2 S x1 Se 3-x1 /Sb 2 S x2 Se 3-x2 /graphite-Ag, of above 5 % conversion efficiency ( η ), open circuit voltage ( V OC ) 0.45 V and short circuit current density ( …

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Solar cells and prototype modules of variable bandgap antimony sulfide selenide thin films made by chemical deposition

Priyanka Bamola, Yareli Colín García, José Diego Gonzaga Sánchez, Enue Barrios Salgado et autres

All-chemically deposited solar cells of CdS/Sb 2 S 2.3 Se 0.7 /Sb 2 S 0.46 Se 2.54 absorber films of 5.5 – 6.0% conversion efficiency constituting prototype module CH of 21.8 mW and efficiency 4%. The modules light-up blue green LED’s of …

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Bismuth Selenide Nanoparticles Prepared by Hot Injection with Cyclic Selenourea as Source of Selenide

Claudia P. Villamizar C, M. T. S. Nair, Padmanabhan K. Nair

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Zinc Telluride Produced by Solid State Reaction Used as Back Surface Field Layer to Improve Antimony Sulfide Selenide Solar Cells

Esteban Ojeda-Durán, Padmanabhan K. Nair

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A current review: Engineering design of greenhouse solar dryers exploring novel approaches

N.I. Román-Roldán, Anabel López‐Ortiz, J.F. Ituna-Yudonago, Padmanabhan K. Nair et autres

This work reviews various engineering factors influencing the efficiency of greenhouse solar dryers, focusing on drying load/volume ratio, ventilation, circulation mode, roof shape, materials, energy storage, and auxiliary heating, as reported in the last decade. The shape of the dryer roof is …

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Improved preservation of the color and bioactive compounds in strawberry pulp dried under UV-Blue blocked solar radiation

Anabel López‐Ortiz, M. Navarrete Salgado, Padmanabhan K. Nair, A. Balbuena Ortega et autres

CINETICAS DE SECADO DE MICROALGAS UTILIZANDO UN SECADOR SOLAR INDIRECTO CON FILTRO UV DE CONVECCION NATURAL

ANA LO, Ituna Yudonago, Padmanabhan K. Nair, Arias Lizárraga

ResumenLas tecnologías de secado solar son una alternativa prometedora a las desventajas del secado al cielo abierto para abordar problemas de contaminación por polvo, insectos y lluvia de los productos secos.También puede enriquecer la calidad y mejorar el proceso de secado, así …

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Insights to the production of SnS-cubic thin films by vacuum thermal evaporation for photovoltaics

Fabiola De Bray Sánchez, M. T. S. Nair, Padmanabhan K. Nair

Abstract Thin films of SnS-CUB with a lattice constant of 11.6 Å, 32 units of SnS per cell and an optical bandgap (E g) of 1.7 eV (direct), are mostly produced by chemical techniques. This cubic polymorph is distinct from its orthorhombic …

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Antimony sulfide selenide thin film solar cells prepared from thermal evaporation sources produced via chemical reactions

Angelica Lizbeth Espinosa Santana, Padmanabhan K. Nair

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Cu-Mg-O thin films by RF magnetron co-sputtering: Their band offsets with CdS in heterojunction solar cells

K.C. Sanal, Soorya Pushpan, Padmanabhan K. Nair, M. T. S. Nair

We report on Cu-Mg.O thin films of 100 - 300 nm in thickness produced by radio frequency (RF) reactive sputtering fromCu and Mg-metal targets in an argon-oxygen ambient. The amount of Mg in the thin films was varied through changingthe RF power …

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