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Investigation of the Characteristic of Solution-Processed Tetraphenyldibenzoperiflanthene (DBP) Film and Its Application on Organic Photovoltaic Cells
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2021-06-24 , DOI: 10.1002/pssa.202100232 Yanqiong Zheng 1, 2 , Juncong Chen 1, 2 , Weiguang Li 1, 2 , Jie Tang 1, 2 , Junbiao Peng 3 , Jianhua Zhang 2 , Xifeng Li 2
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2021-06-24 , DOI: 10.1002/pssa.202100232 Yanqiong Zheng 1, 2 , Juncong Chen 1, 2 , Weiguang Li 1, 2 , Jie Tang 1, 2 , Junbiao Peng 3 , Jianhua Zhang 2 , Xifeng Li 2
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Solution-processed tetraphenyldibenzoperiflanthene (DBP) films are prepared with three popular solvents, including chroloform (CF), chrolobenzene (CB), and dichrolobenzene (ODCB). The absorption and photoluminescence (PL) spectra of the DBP solution and DBP film are investigated. The absorption spectra between the DBP film and DBP solution are similar, whereas the PL spectrum shape of the DBP film and DBP solution is completely different, originating from the DBP molecular aggregation in the film, causing conjugate expansion, which results in dimer luminescence. The DBP donor layer at 32 nm prepared from solvent of CF, CB, and ODCB achieves a power conversion efficiency (PCE) of 1.42%, 0.88%, and 0.48%, respectively. The annealing temperature and DBP thickness are optimized; the 32 nm-thick active layer annealed at 50 °C achieves the highest performance. The CF-DBP film represents an interpenetrating network morphology, slightly higher roughness and hole mobility, which may be the main contribution to the relatively higher photocurrent than the CB-DBP and ODCB-DBP devices. Herein, a simple guidance for preparing solution-processed DBP films is provided and simultaneously its application on organic photovoltaic cells (OPVs) is expanded.
中文翻译：
溶液处理四苯基二苯并泛环芳烃（DBP）薄膜的特性研究及其在有机光伏电池中的应用
溶液处理的四苯基二苯并泛环芳烃 (DBP) 薄膜是用三种常用溶剂制备的，包括氯仿 (CF)、氯苯 (CB) 和二氯苯 (ODCB)。研究了 DBP 溶液和 DBP 薄膜的吸收和光致发光 (PL) 光谱。DBP薄膜和DBP溶液的吸收光谱相似，而DBP薄膜和DBP溶液的PL光谱形状完全不同，源于薄膜中的DBP分子聚集，引起共轭膨胀，从而产生二聚体发光。由 CF、CB 和 ODCB 溶剂制备的 32 nm DBP 供体层的功率转换效率 (PCE) 分别为 1.42%、0.88% 和 0.48%。优化退火温度和DBP厚度；在 50 °C 下退火的 32 nm 厚有源层实现了最高性能。CF-DBP 薄膜表现出互穿网络形态、略高的粗糙度和空穴迁移率，这可能是导致光电流比 CB-DBP 和 ODCB-DBP 器件更高的主要因素。在此，提供了制备溶液处理 DBP 薄膜的简单指南，同时扩展了其在有机光伏电池 (OPV) 上的应用。
更新日期：2021-08-17
中文翻译：
溶液处理四苯基二苯并泛环芳烃（DBP）薄膜的特性研究及其在有机光伏电池中的应用
溶液处理的四苯基二苯并泛环芳烃 (DBP) 薄膜是用三种常用溶剂制备的，包括氯仿 (CF)、氯苯 (CB) 和二氯苯 (ODCB)。研究了 DBP 溶液和 DBP 薄膜的吸收和光致发光 (PL) 光谱。DBP薄膜和DBP溶液的吸收光谱相似，而DBP薄膜和DBP溶液的PL光谱形状完全不同，源于薄膜中的DBP分子聚集，引起共轭膨胀，从而产生二聚体发光。由 CF、CB 和 ODCB 溶剂制备的 32 nm DBP 供体层的功率转换效率 (PCE) 分别为 1.42%、0.88% 和 0.48%。优化退火温度和DBP厚度；在 50 °C 下退火的 32 nm 厚有源层实现了最高性能。CF-DBP 薄膜表现出互穿网络形态、略高的粗糙度和空穴迁移率，这可能是导致光电流比 CB-DBP 和 ODCB-DBP 器件更高的主要因素。在此，提供了制备溶液处理 DBP 薄膜的简单指南，同时扩展了其在有机光伏电池 (OPV) 上的应用。
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