Described in a research paper published last week in the Royal Society of Chemistrys Journal of Materials Chemistry A, researchers at Brown have come up with a technique to deposit sunlight-absorbing perovskite crystals onto a substrate using a room-temperature solvent bath as an alternative to high-heat thermal annealing.
According to the paper, cells based on the so-called solvent-solvent extraction (SSE) process reach a sunlight conversion efficiency of up to 15.2% and an average efficiency of over 10% for semi-transparent cells with a thickness of less than 100-nanometers.
The SSE method has generic appeal, and its key attributes room-temperature process, rapid crystallization, large-area uniform deposition, film-thickness control, ultra-smoothness, and compositional versatility make the SSE method potentially suitable for roll-to-roll scalable processing of hybrid-perovskite thin films for future multifunctional [perovskite solar cells], says the paper.
The research builds on recent years of exciting laboratory progress on solar cells derived from perovskite absorber materials, during which efficiencies have skyrocketed to greater than 20% from less than 5% in only five years.
Commercially, however, the technology still has a long way to go. Earlier this month, start-up company Oxford PV closed an £8 million (US$12.15 million) round of investment in its bid launch commercial products based on perovskite technology.
This content is protected by copyright and may not be reused. If you want to cooperate with us and would like to reuse some of our content, please contact: firstname.lastname@example.org.
By submitting this form you agree to pv magazine using your data for the purposes of publishing your comment.
Your personal data will only be disclosed or otherwise transmitted to third parties for the purposes of spam filtering or if this is necessary for technical maintenance of the website. Any other transfer to third parties will not take place unless this is justified on the basis of applicable data protection regulations or if pv magazine is legally obliged to do so.
You may revoke this consent at any time with effect for the future, in which case your personal data will be deleted immediately. Otherwise, your data will be deleted if pv magazine has processed your request or the purpose of data storage is fulfilled.
Further information on data privacy can be found in our Data Protection Policy.