Details

Autor(en) / Beteiligte

• Xue, Peiyao
• Xin, Jingming
• Lu, Guanyu
• Jia, Boyu
• Lu, Heng
• Lu, Guanghao
• Ma, Wei
• Han, Ray P. S
• Zhan, Xiaowei

Titel

High-performance semitransparent organic solar cells based on sequentially processed heterojunction

Ist Teil von

• Journal of materials chemistry. C, Materials for optical and electronic devices, 2023-06, Vol.11 (24), p.8121-8128

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Average visible transmittance (AVT) and power conversion efficiency (PCE) are the two key parameters to evaluate the performance of semitransparent organic solar cells (ST-OSCs). Reducing the donor content can decrease the light absorption in the visible region and increase the AVT values of ST-OSCs. However, minor donor phase is not sufficient for exciton generation, exciton dissociation and charge transport, and limits the PCEs of OSCs. In this work, ST-OSCs based on a sequentially processed heterojunction (SHJ) structure were fabricated. Through sequentially spin-coating donor PM6 as the bottom layer and acceptor Y6 as the top layer, a better vertical phase distribution is formed in the SHJ structure compared with that in the traditional bulk heterojunction (BHJ) structure. At a PM6 : Y6 ratio of 1 : 2, the ST-OSCs based on the SHJ structure show a PCE of 12.6% at an AVT of 25.4%, while the BHJ ST-OSCs show a PCE of 11.8% at an AVT of 22.9%. Semitransparent organic solar cells based on sequentially processed heterojunction (SHJ) structure show a power conversion efficiency (PCE) of 12.5% and an average visible transmittance (AVT) of 25.4%, outperforming the BHJ counterpart (PCE = 11.8%, AVT = 22.9%).