Novel thienoisoindigo-based dyes for near-infrared organic photovoltaics - A combination of theoretical and experimental study
學年 106
學期 1
出版（發表）日期 2017-12-01
作品名稱 Novel thienoisoindigo-based dyes for near-infrared organic photovoltaics - A combination of theoretical and experimental study
作品名稱（其他語言）
著者 Bo-Cheng Wang; Chin-Kuen Tai; Po-Ting Chou; Yu-Ting Hsu; Likey Chen; Chi-Kan Liu; Li-Hsin Chan; Chih-Hsin Chen
單位
出版者
著錄名稱、卷期、頁數 Organic Electronics 51, p.410-421
摘要 A series of thienoisoindigo (TII)-based dyes (TII 1–4) using different electron-donating moieties (D) and π-linkers were synthesized. The experimental results show that the maximum absorption band of TII 1–4 was located at 611–749 nm. Moreover, their absorption onset was extended to 741–901 nm that covers the near infrared (NIR) region. The bulk-heterojunction solar cell device fabricated by using TII 3/PC61BM as the active layer exhibited a power conversion efficiency (PCE) of 0.82%, showing the potential of TII-based dyes for NIR organic photovoltaics (OPVs). In order to study the structural effect of dyes on the PCE of solar cells, we further designed four TII-based dyes (TII 5–8) and the photophysical and photovoltaic properties for TII 1–8 were investigated through theoretical calculations. Calculated results demonstrate that carbazole group, whose has strong electron-donating ability than D moieties in this study, leads to generate long lifetime of the first excited state and whose generate large short-circuit current (Jsc). Thiophene group, whose has weak resonance energy than other π-linkers, can improve the π delocalization effect throughout whole molecule and generate large open-circuit voltage (Voc). According to these results, TII 3 and TII 8 with the carbazole as D moiety and thiophene as π-linker should be useful in development of a new SM-OPV device.
關鍵字 TII-based derivatives;Electronic and photovoltaic properties;DFT methods;Electron-donating ability and resonance energy
語言 en
ISSN 1878-5530
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Bo-Cheng Wang and Chih-Hsin Chen
審稿制度 否
國別 NLD
公開徵稿
出版型式 ,電子版,紙本
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