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Farbstoffbeschichtete Nanostrukturen für hohe Effizienz von Solarzellen
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ISBN10: 6208385555
ISBN13: 9786208385552
Publisher: Verlag Unser Wissen
Published: Dec 16 2024
Pages: 96
Weight: 0.33
Height: 0.23 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786208385552
Publisher: Verlag Unser Wissen
Published: Dec 16 2024
Pages: 96
Weight: 0.33
Height: 0.23 Width: 6.00 Depth: 9.00
Language: German
Die auf nanokristallinem TiO₂ basierenden Farbstoffsolarzellen (DSSCs) weisen eine hohe Energieumwandlungseffizienz auf und sind einer der häufigsten Ersatzstoffe für kostengünstige Solarenergieumwandlungsgeräte bei hohen Temperaturen. ZnO ist ein weiterer vielversprechender Metalloxid-Halbleiter, der TiO₂ aufgrund seiner im Vergleich zu TiO₂ höheren elektronischen Mobilität ersetzen kann, und sein Leitungsband-Energieniveau ist ähnlich wie bei TiO₂. Nanokristalline ZnO-Partikel wurden durch das Sol-Gel-Verfahren unter Verwendung mesoporöser Elektroden für farbstoffsensibilisierte Solarzellen hergestellt. Die Anatas-Phase von ZnO wurde durch Röntgendiffraktometrie bestätigt. Die Partikelgrö e der ZnO-Nanopartikel wurde durch Transmissionselektronenmikroskopie (TEM) bestätigt. Die Beschichtung der ZnO-Nanopartikel erfolgte mit natürlichen Farbstoffen, die aus Spinat und Mariengold gewonnen wurden. Die Rasterelektronenmikroskop- und EDX-Untersuchung zeigt die Morphologie und elementare Zusammensetzung der reinen und mit natürlichem Farbstoff beschichteten ZnO-Nanopartikel. Tauc's Plot bestätigte die Verringerung der Bandlücke von ZnO-Nanopartikeln mit natürlicher Farbstoffbeschichtung. Raman-Streuspektrum-Spektren zeigen aktive Phononmoden für alle synthetisierten Proben. Die mit natürlichem Farbstoff beschichteten Nanopartikel sind besser.
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