Enhanced reproducibility of planar perovskite solar cells by fullerene doping with silver nanoparticles

Author(s)

Higgins, Marissa ^[1] ; Ely, Fernando ^{[2, 3]} ; Nome, Renata C. ^[3] ; Nome, Rene A. ^[4] ; dos Santos, Diego P. ^[4] ; Choi, Hyunjoo ^[5] ; Nam, Seungjin ^[5] ; Quevedo-Lopez, Manuel ^{[2, 1]}

Affiliation

^[1] Univ Texas Dallas, Dept Chem & Biochem, Richardson, TX 75080 - USA

^[2] Univ Texas Dallas, Dept Mat Sci & Engn, Dallas, TX 75080 - USA

^[3] CTI Renato Archer, IC Packaging Lab, Campinas - Brazil

^[4] Univ Estadual Campinas, Chem Inst, Campinas, SP - Brazil

^[5] Kookmin Univ, Dept Adv Mat Engn, Seoul 136702 - South Korea

• Document type: Journal article
• Source: Journal of Applied Physics; v. 124, n. 6 AUG 14 2018.
• Web of Science Citations: 3

Abstract

A small cross-section of silver nanoparticles (AgNPs) placed at the rear-part of the solar cell avoids the parasitic absorption of the nanoparticles which is the biggest barrier for plasmonic structures when acting as photocurrent enhancers. Herein, we demonstrate p-i-n planar perovskite solar cells with the structure ITO/PEDOT:PSS/MAPbI(3)/PCBM/Ni:Au, where the PCBM electron extraction layer (EEL) was intentionally modified with variable amounts of AgNPs. The addition of small amounts of AgNPs (e.g., 5 wt. %) into the PCBM improved the overall reproducibility and reliability of the solar cell fabrication process after optimization. Plasmonic simulations suggest that any plasmonic-optical effects are relatively small compared to sample absorbance due to perovskite alone. It has been concluded that plasmonic-electrical effects play a major role in averaged performance improvement. Therefore, the addition of small AgNPs in low concentration to the EEL layer accounts for higher J(sc), V-oc and FF as a result of a better perovskite coverage by the EEL and an improved charge carrier collection as evidenced by morphological and electrical analysis. Published by AIP Publishing. (AU)

• FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
• Grantee: Ana Flávia Nogueira
• Support Opportunities: Research Grants - Applied Research Centers Program
• FAPESP's process: 14/50632-6 - Surface-plasmon resonance sensors based on microstructured optical fiber
• Grantee: Cristiano Monteiro de Barros Cordeiro
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/14183-5 - Neutron detection system based on nanoparticle composites
• Grantee: Fernando Ely
• Support Opportunities: Scholarships abroad - Research