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Kajian Teoritik Efek Pelarut pada Coumarin untuk Aplikasi Dye Sel Surya

Siti Zulaehah, Eqwar Saputra, Trio Nur Wibowo, Riri Jonuarti, Nadhratun Naiim Mobarak, Wahyu Tri Cahyanto

Abstract


Dye-sensitized solar cell (DSSC) merupakan salah satu piranti penting di mana teknologi paling umum digunakan untuk mentransfer energi matahari menjadi listrik, namun efisiensinya masih relatif rendah.  Pewarna coumarin dasar memiliki potensi yang cukup tinggi untuk digunakan  di DSSC dengan sifat yang  ramah lingkungan dan mudah produksi.  Adapun tujuan penelitian ini adalah mempelajari potensial coumarin sebagai zat warna pada piranti sel surya. Langkah dasar dalam memahami perilaku mikroskopis untuk mempelajari potensial dye ini, peneliti mempelajari struktur geometris, struktur elektronik dan optik dari dye coumarin dalam pelarut menggunakan metode kerapatan fungsional atau density functional theory (DFT) dan time dependent density functional theory (TD-DFT).  Hasil penelitian menunjukkan bahwa efek pelarut pada dye coumarin dapat menstabilkan struktur coumarin.   Dengan adanya  zat pelarut dapat meningkatkan gap energi orbital dari  HOMO-LUMO,  kekuatan osilator, dan memiliki efisiensi penyerapan cahaya (LHE) yang lebih tinggi, serta pergeseran spektrum penyerapan UV ke arah sinar tampak.  Hasil ini menunjukkan bahwa pelarut memiliki sifat yang lebih baik untuk aplikasi di DSSC pada coumarin tanpa modifikasi.


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Full Text: PDF

DOI: 10.30595/cerie.v2i2.14054

DOI (PDF): http://dx.doi.org/10.30595/cerie.v2i2.14054.g5029

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ISSN: 2774-8006