TY - JOUR
T1 - Stable Organic Solar Cells Enabled by Simultaneous Hole and Electron Interlayer Engineering
AU - Hadmojo, Wisnu Tantyo
AU - Isikgor, Furkan H.
AU - Lin, Yuanbao
AU - Ling, Zhaoheng
AU - He, Qiao
AU - Faber, Hendrik
AU - Yengel, Emre
AU - Ali, Roshan
AU - Samad, Abdus
AU - Ardhi, Ryanda Enggar Anugrah
AU - Jeong, Sang Young
AU - Woo, Han Young
AU - Schwingenschlögl, Udo
AU - Heeney, Martin
AU - Anthopoulos, Thomas D.
N1 - Publisher Copyright:
© 2024 The Authors. Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.
PY - 2024/9
Y1 - 2024/9
N2 - The development of high-performance organic solar cells (OSCs) with high operational stability is essential to accelerate their commercialization. Unfortunately, our understanding of the origin of instabilities in state-of-the-art OSCs based on bulk heterojunction (BHJ) featuring non-fullerene acceptors (NFAs) remains limited. Herein, we developed NFA-based OSCs using different charge extraction interlayer materials and studied their storage, thermal, and operational stabilities. Despite the high power conversion efficiency (PCE) of the OSCs (17.54%), we found that cells featuring self-assembled monolayers (SAMs) as hole-extraction interlayers exhibited poor stability. The time required for these OSCs to reach 80% of their initial performance (T80) was only 6 h under continuous thermal stress at 85 °C in a nitrogen atmosphere and 1 h under maximum power point tracking (MPPT) in a vacuum. Inserting MoOx between ITO and SAM enhanced the T80 to 50 and ~15 h after the thermal and operational stability tests, respectively, while maintaining a PCE of 16.9%. Replacing the organic PDINN electron transport layer with ZnO NPs further enhances the cells' thermal and operational stability, boosting the T80 to 1000 and 170 h, respectively. Our work reveals the synergistic roles of charge-selective interlayers and device architecture in developing efficient and stable OSCs.
AB - The development of high-performance organic solar cells (OSCs) with high operational stability is essential to accelerate their commercialization. Unfortunately, our understanding of the origin of instabilities in state-of-the-art OSCs based on bulk heterojunction (BHJ) featuring non-fullerene acceptors (NFAs) remains limited. Herein, we developed NFA-based OSCs using different charge extraction interlayer materials and studied their storage, thermal, and operational stabilities. Despite the high power conversion efficiency (PCE) of the OSCs (17.54%), we found that cells featuring self-assembled monolayers (SAMs) as hole-extraction interlayers exhibited poor stability. The time required for these OSCs to reach 80% of their initial performance (T80) was only 6 h under continuous thermal stress at 85 °C in a nitrogen atmosphere and 1 h under maximum power point tracking (MPPT) in a vacuum. Inserting MoOx between ITO and SAM enhanced the T80 to 50 and ~15 h after the thermal and operational stability tests, respectively, while maintaining a PCE of 16.9%. Replacing the organic PDINN electron transport layer with ZnO NPs further enhances the cells' thermal and operational stability, boosting the T80 to 1000 and 170 h, respectively. Our work reveals the synergistic roles of charge-selective interlayers and device architecture in developing efficient and stable OSCs.
KW - interlayers
KW - metal oxide
KW - organic solar cells
KW - self-assembled monolayers
KW - stability
UR - http://www.scopus.com/inward/record.url?scp=85192863899&partnerID=8YFLogxK
U2 - 10.1002/eem2.12712
DO - 10.1002/eem2.12712
M3 - Article
AN - SCOPUS:85192863899
SN - 2575-0348
VL - 7
JO - Energy and Environmental Materials
JF - Energy and Environmental Materials
IS - 5
M1 - e12712
ER -
