Silicon thin film triple junction cell boost efficiencies to 14.8% for Mitsubishi

A triple-junction thin-film silicon cell structure that utilizes the majority of the solar spectrum is in development phase at Mitsubishi Electric. A 5mm x 5mm cell is claimed to have produced conversion efficiencies of 14.8% in the lab. High-quality film-deposition processing of each layer was required. Mitsubishi said that first layer absorbs short wavelengths and the third layer absorbs long wavelengths. Texture fabrication was also applied to transparent electrodes for optimal confinement of light.

Mitsubishi said it intends to continue its R&D of the triple-junction cell with the aim to raise conversion efficiencies further. Work will focus on improving cell structure and materials as well as processing conditions.

PV-Tech Storage Promo

Newsletter

Preview Latest
Subscribe
We won't share your details - promise!
Next Generation Solar PV Finance

Publications

  • Photovoltaics International 24th Edition

    Signs earlier in the year of the global industry entering a growth phase have now been confirmed beyond any doubt. Almost all the big-name suppliers have now announced some form of manufacturing capacity expansion, a trend that analysts agree will only gather pace as long as the levels of demand predicted over the next few years turn out to be correct.

  • Manufacturing The Solar Future: The 2014 Production Annual

    Although the past few years have proved extremely testing for PV equipment manufacturers, falling module prices have driven solar end-market demand to previously unseen levels. That demand is now starting to be felt by manufacturers, to the extent that leading companies are starting to talk about serious capacity expansions later this year and into 2015. This means that the next 12 months will be a critical period if companies throughout the supply chain are to take full advantage of the PV industry’s next growth phase.

Partners

Acknowledgements

Solar Media