Perkembangan perovskite solar cell
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Perkembangan Perovskite Solar Cell
Aditya Rinaldi (20213061)Mairizwan (20213035)
Muh. Sainal Abidin (20213032)Syarif Hussein Sirait (20213062)
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1 sun illuminated : 100 mW/cm2
Jsc = short-circuit photo current density
Voc = open circuit voltage
IPCE= incident photon to current efficiency
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Model Pembangkitan Arus Solar Sel
• Rangkaian Equivalen
• Dalam keadaan tidak disinari(darkness), solar sel tidak aktif danbekerja sebagai sebuah dioda, yaitutidak menghasilkan arus dantegangan.
• Jika dihubungkan dengan sebuahexternal supply dapatmembangkitkan arus yang disebutsebagai arus dioda. Model pembangkitan arus terdiri darisumber arus dan sebuah rangkaianhambatan seri , yang menggambarkan bagian resistansisetiap sel dan hubungan antar sel.
• Arus total merupakan beda antaraarus photo (photocurrent) dan arusdioda normal
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Karakteristik Solar Sel
• Hambatan R kecil, makadaerah operasi sel beradadaerah MN pada kurva, dimana sel dianggapsebuah sumber aruskonstan yang mendekatishort circuit current.
• Jika R besar sel beroperasidi daerah PS pada kurva, dimana sel dianggapsebagai sumber tegangankonstan (the open circuit voltage)
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T. Miyasaka
Nam-Gyu Park
Gratzel, Nam-Gyu Park
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T. Miyasaka 2009
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• Film TiO2 sudah dapat difabrikasi sebagaiphotoanode
• Organik sensitizer memiliki kemampuanmenyerap cahaya terbatas karena koefisienabsorbsi rendah.
• Kemampuan menyerap cahaya perovskitebagus
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• After optimization of the average TiO2 thickness for short-circuit photocurrent density (Jsc), the maximum Jsc occurred with 8 μm for CH3NH3PbI3/TiO2 and 12 μm for CH3NH3PbBr3/TiO2
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• Ketajaman pada 570nm menunjukkankarakteristik band-gap absospsi
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Nam-Gyu park 2011
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Perkembangan selanjutnya denganmemodifikasi permukaan TiO2 dengan Pb(NO3)2
pada saat pendiposisian perovskite QD.
Efisiensi meningkat dari 6,2% menjadi 6,5% karena peningkatan Voc
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• Kekurangan : degradasi 80% karena perovskiteQD dissolve ke dalam redoks elektrolit
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• Background: organic dye TiO2 film combined with Spiro-MeOTAD has Voc = 1,02V
• Improved:
• CH3NH3PbI3 sebagai perovskite nanocrystallight absorber
• Spiro-MeOTAD as a hole-transporting layer
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• red 0.6 mm, blue 1.15 mm and green 1.4 mm.
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• sekian