[2PS-220]
Fluorinated Phenazine-Based Conjugated Polymers for Polymer Solar Cell Applications
발표자Puspitasari (Pukyong National University)
연구책임자진영읍 (Pukyong National University)
공동저자Puspitasari (Pukyong National University), 이재훈 (Pukyong National University), 김민섭 (Pukyong National University), 진영읍 (Pukyong National University)
Abstract
Fluorinated phenazine–based donor–acceptor conjugated polymers were synthesized for polymer solar cell applications. Four polymers using benzodithiophene (BDT) or benzo[1,2-b:4,5-b′]dithiophene-thiophene (BDTT) donors and linear or branched alkyl side chains were investigated. BDTT-based and branched-chain polymers exhibited deeper HOMO energy levels, resulting in enhanced open-circuit voltage (V_oc). Atomic force microscopy revealed that linear-chain polymers showed uniform morphology in 1,2-dichlorobenzene, while branched-chain polymers required 3% 1,8-diiodooctane for optimization. The best device achieved a power conversion efficiency of 3.41%, with a short-circuit current density of 9.36 mA cm⁻² and a V_oc of 0.66 V. These findings highlight the role of donor units and side-chain engineering in fluorinated phenazine-based polymer solar cells.