Anthocyanins and betalains as light-harvesting pigments for dye-sensitized solar cells |
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| Authors: | Giuseppe Calogero Jun-Ho Yum Alessandro Sinopoli Gaetano Di Marco Michael Grätzel Mohammad Khaja Nazeeruddin |
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| Affiliation: | 1. CNR-IPCF, Istituto per i Processi Chimico-Fisici, Viale F. Stagno D’Alcontres 37, I-98158 Messina, Italy;2. Laboratory of Photonics and Interfaces, EPFL SB ISIC LPI, CH-1015 Lausanne, Switzerland;1. Department of Electrical Engineering, Dr. B. C. Roy Engineering College, Durgapur 713206, India;2. Department of Applied Electronics and Instrumentation Engineering, Dr. B. C. Roy Engineering College, Durgapur 713206, India;3. Department of Electrical Engineering, Shree Ramkrishna Shilpa Vidyapith, Suri, Birbhum 731101, India;1. Research Institute of Advanced Engineering Technology, Chosun University, Gwangju 501-759, Republic of Korea;2. Department of Environmental Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea;3. School of Applied Chemical Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea;4. Department of Advanced & Chemicals, Chonnam National University, Gwangju 500-757, Republic of Korea;5. Green Energy Institute, Mokpo-Si 530-400, Republic of Korea;6. Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Republic of Korea;1. Dipartimento di Biologia, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133 Roma, Italy;2. CREA, Centro di Ricerca per la Frutticoltura, via di Fioranello 52, 00134 Roma, Italy;3. CHOSE–Centre for Hybrid and Organic Solar Energy—University of Rome “Tor Vergata”, via del Politecnico 1, 00133 Roma, Italy;1. Department of Physics, Pondicherry University, Puducherry 605 014, India;2. Nanomaterials and Solar Energy Conversion Lab., Department of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, India |
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| Abstract: | We present the photoelectrochemical properties of dye-sensitized solar cells using natural pigments containing betalains and anthocyanins as sensitizers. The dyes extracted from grape, mulberry, blackberry, red Sicilian orange, Sicilian prickly pear, eggplant and radicchio have shown a monochromatic incident photon to current efficiency (IPCE) ranging from 40% to 69%. Short circuit photocurrent densities (Jsc) up to 8.8 mA/cm2, and open circuit voltage (Voc) ranging from 316 to 419 mV, were obtained from these natural dyes under 100 mW/cm2 (AM 1.5) simulated sunlight. The best solar conversion efficiency of 2.06% was achieved with Sicilian prickly pear fruits extract. The influence of pH and co-absorbers on natural sensitizers, were investigated and discussed. |
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