Holographic lens spectrum splitting photovoltaic system for increased diffuse collection and annual energy yield

Shelby D. Vorndran; Yuechen Wu; Silvana Ayala; Raymond K. Kostuk

doi:10.1117/12.2187124

5 September 2015 Holographic lens spectrum splitting photovoltaic system for increased diffuse collection and annual energy yield

Shelby D. Vorndran, Yuechen Wu, Silvana Ayala, Raymond K. Kostuk

Author Affiliations +

Proceedings Volume 9559, High and Low Concentrator Systems for Solar Energy Applications X; 95590G (2015) https://doi.org/10.1117/12.2187124
Event: SPIE Optics + Photonics for Sustainable Energy, 2015, San Diego, California, United States

Abstract

Concentrating and spectrum splitting photovoltaic (PV) modules have a limited acceptance angle and thus suffer from optical loss under off-axis illumination. This loss manifests itself as a substantial reduction in energy yield in locations where a significant portion of insulation is diffuse. In this work, a spectrum splitting PV system is designed to efficiently collect and convert light in a range of illumination conditions. The system uses a holographic lens to concentrate shortwavelength light onto a smaller, more expensive indium gallium phosphide (InGaP) PV cell. The high efficiency PV cell near the axis is surrounded with silicon (Si), a less expensive material that collects a broader portion of the solar spectrum. Under direct illumination, the device achieves increased conversion efficiency from spectrum splitting. Under diffuse illumination, the device collects light with efficiency comparable to a flat-panel Si module. Design of the holographic lens is discussed. Optical efficiency and power output of the module under a range of illumination conditions from direct to diffuse are simulated with non-sequential raytracing software. Using direct and diffuse Typical Metrological Year (TMY3) irradiance measurements, annual energy yield of the module is calculated for several installation sites. Energy yield of the spectrum splitting module is compared to that of a full flat-panel Si reference module.

Conference Presentation

Citation Download Citation

Shelby D. Vorndran, Yuechen Wu, Silvana Ayala, and Raymond K. Kostuk "Holographic lens spectrum splitting photovoltaic system for increased diffuse collection and annual energy yield", Proc. SPIE 9559, High and Low Concentrator Systems for Solar Energy Applications X, 95590G (5 September 2015); https://doi.org/10.1117/12.2187124

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available