Highly Efficient and Stable Perovskite Solar Cells Enabled by Low‐Cost Industrial Organic Pigment Coating
Abstract
Surface passivation of perovskite solar cells (PSCs) using a low‐cost industrial organic pigment quinacridone (QA) is presented. The procedure involves solution processing a soluble derivative of QA, N,N‐bis(tert‐butyloxycarbonyl)‐quinacridone (TBOC‐QA), followed by thermal annealing to convert TBOC‐QA into insoluble QA. With halide perovskite thin films coated by QA, PSCs based on methylammonium lead iodide (MAPbI3) showed significantly improved performance with remarkable stability. A PCE of 21.1 % was achieved, which is much higher than 18.9 % recorded for the unmodified devices. The QA coating with exceptional insolubility and hydrophobicity also led to greatly enhanced contact angle from 35.6° for the pristine MAPbI3 thin films to 77.2° for QA coated MAPbI3 thin films. The stability of QA passivated MAPbI3 perovskite thin films and PSCs were significantly enhanced, retaining about 90 % of the initial efficiencies after more than 1000 hours storage under ambient conditions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 27, 2020
- Source ID
- 10.1002/ange.202012095
Entities
People
- Alex J. Robb
- Biwu Ma
- Bumjoon Kim
- Eric Lochner
- He Liu
- J. S. Raaj Vellore Winfred
- Joseph B Schlenoff
- Kenneth Hanson
- Michael Worku
- Qingquan He
- Sandrine Lteif
Organizations
- Air Force Office of Scientific Research
- Division of Electrical, Communications & Cyber Systems
- Florida State University
- KAIST
- National Research Foundation of Korea
- Office of Basic Energy Sciences