Photovoltaic Devices Based on Novel Carbon/Thiophene Supramolecular Structures
Publish place: ششمین کنفرانس انرژی های تجدید پذیر و تولید پراکنده ایران
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICREDG06_170
تاریخ نمایه سازی: 1 دی 1397
Abstract:
For verifying the influence of donor-acceptor supramolecules on photovoltaic properties, different hybrids were designed and employed in organic solar cells. In this respect, reduced graphene oxide (rGO) was functionalization with 2-thiophene acetic acid (rGO-f-TAA) and grafted with poly(3-dodecylthiophene) (rGO-g-PDDT) and poly(3-thiophene ethanol) (rGO-g-PTEt) to manipulate orientation of poly(3 -hexylthiophene) (P3HT) assemblies. Face-on, edge-on, and flat -on orientations were detected for assembled P3HTs on rGO and its functionalized and grafted derivatives, respectively. Alteration of P3HT orientation from face-on to flat-on enhanced current density (Jsc), fill factor (FF), and power conversion efficiency (PCE) and thus Jsc = 7.11 mA/cm2, FF = 47%, and PCE = 2.14% were acquired. By adding phenyl-C71-butyric acid methyl ester (PC71BM) to active layers composed of pre-designed P3HT/rGO, P3HT/rGO-f-TAA, P3HT/rGO-g-PDDT and P3HT/rGO-g-PTEt hybrids, photovoltaic characteristics further improved, demonstrating that supramolecules appropriately mediated in P3HT:PC71BM solar cells. Phase separation was more intensified in best-performing photovoltaic systems. Larger P3HT crystals assembled ontografted rGOs (95 143 nm) may have acted as convenient templates for the larger and more intensified phase separation in P3HT:PCBM films. The best performances were reached for P3HT:P3HT/rGO-g-PDDT:PCBM (Jsc = 9.45 mA/cm2, FF = 54%, and PCE = 3.16%) and P3HT:P3HT/rGO-g-PTEt:PCBM (Jsc = 9.32 mA/cm2, FF = 53%, and PCE = 3.11%) photovoltaic systems
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Authors
Samira Agbolaghi
Chemical Engineering Department, Faculty of Engineering Azarbaijan Shahid Madani University Tabriz, Ira
Younes Beygi-Khosrowshahi
Chemical Engineering Department, Faculty of Engineering Azarbaijan Shahid Madani University Tabriz, Ira
Maryam Hosseini
Chemical Engineering Department, Faculty of Engineering Azarbaijan Shahid Madani University Tabriz, Ira
Raana Sarvari
Department of Chemistry Payame Noor University Tehran, Iran