What is the efficiency of semitransparent polymer solar cells?

Hu, Z., Wang, Z. & Zhang, F. Semitransparent polymer solar cells with 9.06% efficiency and 27.1% average visible transmittance obtained by employing a smart strategy. J. Mater. Chem. A 7, 7025–7032 (2019). Xu, C. et al. Wide bandgap polymer with narrow photon harvesting in visible light range enables efficient semitransparent organic photovoltaics.

How to improve TPV transparency in semitransparent solar cells?

Reducing the content of the visible-light-harvesting semiconductor is proved an effective method to enhance the TPV transparency in semitransparent solar cells 5, 24, 25. With the ultra-narrow bandgap (1.24 eV) 26, IEICO-4F can only slightly absorb the red light (600–650 nm), which indicates a good transparent semiconductor candidate for TPV.

What is the efficiency of a single-junction organic solar cell?

Yuan, J. et al. Single-junction organic solar cell with over 15% efficiency using fused-ring acceptor with electron-deficient core. Joule 3, 1140–1151 (2019). Hu, Z., Wang, Z., An, Q. & Zhang, F. Semitransparent polymer solar cells with 12.37% efficiency and 18.6% average visible transmittance. Sci. Bull. 65, 131–137 (2020).

Are organic photovoltaic semiconductors suitable for TPVs?

Organic photovoltaic semiconductors with NIR-harvesting capability are the promising materials for the development of TPVs 15, 16. Some efficient emerging organic semiconductors with NIR-harvesting capability are introduced in semitransparent solar cells recently and present good device performance 6, 17, 18, 19, 20.

Why is the balancing process in highly transparent TPVs low?

The lack of highly transparent electrodes is also be suspected as an important reason for the low device transparency. To better understand the influence factors, and further expand the basic knowledge of the balancing process in highly transparent TPVs (AVT > 50%), a systematic study is designed and conducted.

What is a solar PBR regulation?

In addition, the Solar PBR regulation describes how DEQ will address the analyses of potential significant beneficial and adverse impacts, inter-agency consultations, mitigation plans, facility site planning, public participation, permit fees, compliance, and enforcement.