New light on perovskite solar cell durability problems

A correct amount of water is critical in the manufacture of the cell for the crystallization of materials.

Perovskite solar cells are one of the hot topics in the energy field. They have the potential for cheap mass production, but they are also sensitive to moisture. Cooperation between the Chinese University of Xi'an Jiaotong and Aalto University have resulted in better understanding of the degradation mechanisms.

Perovskite-based solar cells were invented in 2009. Their efficiency has risen astonishingly from a few percent to the same level as traditional silicon solar cells. Perovskite solar cells are one of the hot topics in the energy field today. They have the potential for cheap mass production.

The problem with these cells is their sensitivity to moisture. A small amount of water is enough to destroy the cell.

The researchers at the Chinese University of Xi'an Jiaotong and Aalto University have thoroughly studied mechanisms for the decomposition of Perovskite Solar Cells. Professor Peter Lund of the Department of Applied Physics, who has been involved in the study, says that the birth of degradation mechanisms is now much better understood than before. In fact, a small amount of water is useful in the manufacture of the cell for the crystallization of materials, but when a certain threshold is exceeded, the situation is reversed. Next, the Sino-Finnish consortium plans to develop better testing and encapsulation methods for perovskite solar cells. The results of the study were published in the most prestigious energy science journal Energy and Environmental Science.

For more information: Jianbing Huang,  Shunquan Tan,  Peter Lund  and  Huanping Zhou. Impact of H2O on organic-inorganic hybrid perovskite solar cells. Energy & Environmental Science, 2017, DOI: 10.1039/C7EE01674C

  • Published:
  • Updated:
Share
URL copied!

Related news

Aalto University / Verkkoturvallisuus ja -luottamus / photo: Aki-Pekka Sinikoski
Research & Art, Studies Published:

Guest speakers discuss the effects of digitalisation on a public lecture series

How does digitalisation affect business, society and security? Join our public lectures to hear guest speakers from the industry and institutions discuss the hottest issues on digitalisation!
Aalto EIT Services Javor
Research & Art Published:

EIT Festival - 2nd October @Aalto

Welcome to the EIT Festival to discover EIT Innovation Communities in Finland!
Sediment sampling in the historical centre of Venice with the Limnos sampler provided by the Finnish Environmental Institute SYKE. Image: Pauliina Purhonen
Research & Art, Studies Published:

The trip to Venice—in the words of the students

Contemporary design students spent a week in Venice setting up the exhibition and gathering soil samples for the research.
Coiling vases from the local earthenware and painting the vases with the local earth in Earth Laboratory, Venice, August 2019. Photo: Catharina Kajander
Research & Art Published:

Working with contaminated soil in Venice

Revealing human traces in Venice Biennale.