High Open-Circuit Voltage Solar Cells Based on Organic–Inorganic Lead Bromide Perovskite

✍ Scribed by Edri, Eran; Kirmayer, Saar; Cahen, David; Hodes, Gary

• Book ID: 120261621
• Publisher: American Chemical Society
• Year: 2013
• Tongue: English
• Weight: 328 KB
• Volume: 4
• Category: Article
• ISSN: 1948-7185
• DOI: 10.1021/jz400348q

✦ Synopsis

Mesoscopic solar cells, based on solution-processed organic-inorganic perovskite absorbers, are a promising avenue for converting solar to electrical energy. We used solution-processed organic-inorganic lead halide perovskite absorbers, in conjunction with organic hole conductors, to form high voltage solar cells. There is a dire need for lowcost cells of this type, to drive electrochemical reactions or as the high photon energy cell in a system with spectral splitting. These perovskite materials, although spin-coated from solution, form highly crystalline materials. Their simple synthesis, along with high chemical versatility, allows tuning their electronic and optical properties. By judicious selection of the perovskite lead halide-based absorber, matching organic hole conductor, and contacts, a cell with a ∼ 1.3 V open circuit voltage was made. While further study is needed, this achievement provides a general guideline for additional improvement of cell performance.