Related Experiment Video
Updated: Jun 15, 2026
11:38
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
18.4K
Multifunctional Acetaminophen Interlayer for High Efficiency and Durability Lead-Lean Perovskite Solar Cells.
Xuefei Ren1, Shuqi Wang1, Hengzhuo Cai1
1Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
Langmuir : the ACS Journal of Surfaces and Colloids
|September 12, 2024
Summary
Tin-based perovskite solar cells (PSCs) show improved efficiency and stability using lead(II) thiocyanate (Pb(SCN)2) as an antioxidant and acetaminophen (ACE) for interface modification, boosting performance and reducing defects.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Tin-based perovskite solar cells (PSCs) suffer from low efficiency and poor stability due to Sn2+ oxidation and defects.
- The rapid crystallization rate in PSCs exacerbates these issues, hindering performance compared to lead-based counterparts.
Purpose of the Study:
- To enhance the photovoltaic (PV) performance and stability of tin-based PSCs.
- To address Sn2+ oxidation and improve film quality using specific additives and interface modifications.
Main Methods:
- Incorporation of a small amount of lead(II) thiocyanate (Pb(SCN)2) as an antioxidant into the perovskite precursor.
- Modification of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/perovskite interface using acetaminophen (ACE).
Main Results:
- The combined Pb(SCN)2 and ACE treatment optimized energy level alignment and inhibited Sn2+ oxidation, reducing trap-state density.
- Synergistic effects led to reduced nonradiative recombination, enhanced carrier transport, and improved PV performance and stability.
- Modified unsealed PSCs achieved a 12.04% champion efficiency and retained 99% of initial PCE after 2100 hours in N2, outperforming reference cells.
Conclusions:
- The synergistic approach of Pb(SCN)2 antioxidant and ACE interfacial modification significantly boosts the efficiency and stability of tin-based PSCs.
- This strategy effectively mitigates Sn2+ oxidation and defects, paving the way for more robust and efficient tin-based perovskite solar technology.
- Modified PSCs exhibit enhanced stability, even in humid air conditions, without encapsulation.
