Kim Tae Wook, Kim Sung Hyun, Shim Jae Won, Hwang Do Kyung
Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.
School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea.
Front Optoelectron. 2022 Apr 28;15(1):18. doi: 10.1007/s12200-022-00024-5.
Energy harvesting and light detection are key technologies in various emerging optoelectronic applications. The high absorption capability and bandgap tunability of organic semiconductors make them promising candidates for such applications. Herein, a poly(3-hexylthiophene-2,5-diyl) (P3HT):indene-C60 bisadduct (ICBA) bulk heterojunction-based organic photodiode (OPD) was reported, demonstrating dual functionality as an indoor photovoltaic (PV) and as a high-speed photodetector. This OPD demonstrated decent indoor PV performance with a power conversion efficiency (PCE) of (11.6 ± 0.5)% under a light emitting diode (LED) lamp with a luminance of 1000 lx. As a photodetector, this device exhibited a decent photoresponsivity of 0.15 A/W (green light) with an excellent linear dynamic range (LDR) of over 127 dB within the optical power range of 3.74 × 10 to 9.6 × 10 W/cm. Furthermore, fast photoswitching behaviors could be observed with the rising/falling times of 14.5/10.4 μs and a cutoff (3 dB) frequency of 37 kHz. These results might pave the way for further development of organic optoelectronic applications.
能量收集和光检测是各种新兴光电应用中的关键技术。有机半导体的高吸收能力和带隙可调性使其成为此类应用的有前途的候选材料。在此，报道了一种基于聚（3-己基噻吩-2,5-二亚基）（P3HT）：茚-C60双加合物（ICBA）体异质结的有机光电二极管（OPD），展示了作为室内光伏（PV）和高速光电探测器的双重功能。该OPD在亮度为1000 lx的发光二极管（LED）灯下表现出良好的室内光伏性能，功率转换效率（PCE）为（11.6±0.5）%。作为光电探测器，该器件在3.74×10至9.6×10 W/cm的光功率范围内表现出0.15 A/W（绿光）的良好光响应度，具有超过127 dB的出色线性动态范围（LDR）。此外，可以观察到快速的光开关行为，上升/下降时间为14.5/10.4 μs，截止（3 dB）频率为37 kHz。这些结果可能为有机光电应用的进一步发展铺平道路。
