Details

Autor(en) / Beteiligte

• Okada, Yoshitaka
• Yasushi Shoji
• Chao-Yu Hung
• Farrell, Daniel J.
• Sogabe, Tomah

Titel

High density quantum dot solar cells for concentrating photovoltaics (CPV)

Ist Teil von

• 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2017, p.1-4

Ort / Verlag

IEEE

Erscheinungsjahr

2017

Quelle

IEEE Xplore

Beschreibungen/Notizen

• For a multijunction solar cell (MJSC), the current matching in each subcell becomes the key issue to achieve high efficiency. For an intermediate band solar cell (IBSC) on the other hand, which also has a potential of achieving high efficiency, its equivalent circuit is comprised of a series/parallel circuit and thus it operates at a higher current density than a MJSC. Due to this inherent property, heat management becomes important when operated under a high concentrating condition. In this work, we propose one solution to this problem, where a wide bandgap cell is placed on top of IBSC, which serves as a current constraint cell but also leads to a higher V OC and hence cell efficiency.