Journal
NATURE PHOTONICS
Volume 16, Issue 2, Pages 119-+Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41566-021-00931-7
Keywords
-
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [2021R1A2C3004202]
- Wearable Platform Materials Technology Center - Korean Government (MSIT) [2016R1A5A1009926]
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) - Ministry of Science, ICT and Future Planning [2020M1A2A2080746]
- Research Project - Ulsan City of UNIST (Ulsan National Institute of Science and Technology) [1.210058.01]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government (MOTIE) [20193091010460]
- Development Program of the Korea Institute of Energy Research (KIER) [C1-2401, C1-2402]
Ask authors/readers for more resources
By utilizing a symmetry-tuned strategy at the molecular level, we have developed a new class of spiro-Naph analogues as the hole transport material in perovskite solar cells, resulting in improved stability and power conversion efficiency.
Stabilizing the best-performing state-of-the-art perovskite solar cells (PSCs) based on a spiro-OMeTAD hole transport material (HTM), without sacrificing their high power conversion efficiency (PCE) levels, is a challenging task. By exploiting the symmetry-tuned strategy at the molecular level, we have developed spiro-OMeTAD analogues (namely, the spiro-Naph series) with asymmetric phenylnaphthylamine edge units. The new spiro-Naph HTM-based PSC achieved a high PCE of 24.43%, higher than that achieved with spiro-OMeTAD. In addition to excellent stability when soaking the encapsulated device with continuous light, superior device stability was also obtained for the unencapsulated spiro-Naph-based PSC-a PCE of 21.12% was retained in air with similar to 25% relative humidity after 2,000 h and a PCE of 18.79% was retained at an elevated temperature of 60 degrees C after 400 h. We also constructed a spiro-Naph-based large-area module (25 cm(2)) with a PCE of 21.83%.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available