Lead-Grabbing and Ecofriendly-Solvent-Processing Polymeras Hole Transporting Material in Perovskite Solar Cells
발표자
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초록
내용
Unlike in the past, when it was struggling to increase device efficiency and stability of perovskite solar cells (PSCs), Numerous researchers has recently introduced materials having multifunction for hole transporting materials (HTMs). Many studies have focus on energy level, carrier mobility, morphology, lead toxicity, and etc. In this work, the hole transport polymer synthesized with dithiophene and benzothiadiazole can get high performance and stability. The polymer can get enhanced solubility in nonaromatic green solvents via tetraethylene glycol (TEG) substitution. The point is, we suggested an alternative strategy to solve inevitable problems of lead-free perovskites. TEG side chain can seize lead ion to prevent leakage and toxicity issues (binding coefficient = 2.76). Thus, non-dopant, ecofriendly-solvent-processable TEG polymer Titanium dioxide planar structured solar cell obtained over 21% efficiency with 2-MA solvent and 20% with 3-MC solvent.