Conjugated push-pull type oligomer as a new electron transport material for improved stability p-i-n perovskite solar cellsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 3 февраля 2022 г.
Аннотация:Push-pull type conjugated oligomer TBTBT with alternating thiophene (T) and benzothiadiazole (B) blocks wasstudied as an electron transport layer (ETL) material for p-i-n perovskite solar cells. The devices assembled usingTBTBT as the single-component ETL provided the encouraging photovoltaic performance as reflected in theobtained power conversion efficiency (PCE) of 14.3%. The hybrid ETL structure composed of PC61BM/TBTBTbilayer increased substantially the device short circuit current density and boosted PCE from 14.3% to 17.4%.Even though the application of TBTBT as the component of hybrid ETL did not enhance the device efficiency ascompared to the reference cells using PC61BM, such modification significantly improved the operational stabilityof PSCs, which is crucially important for practical implementation of this technology.