Enhanced external radiative efficiency for 20.8 efficient single-junction GaInP solar cells

By J. Geisz, M. Steiner, I. García, Sarah Kurtz, Daniel J. Friedman. 2013

271 citations recorded by the source corpus.

We demonstrate 1.81 eV GaInP solar cells approaching the Shockley-Queisser limit with 20.8% solar conversion efficiency, 8% external radiative efficiency, and 80–90% internal radiative efficiency at one-sun AM1.5 global conditions. Optically enhanced voltage through photon recycling that improves light extraction was achieved using a back metal reflector. This optical enhancement was realized at one-sun currents when the non-radiative Sah-Noyce-Shockley junction recombination current was reduced by placing the junction at the back of the cell in a higher band gap AlGaInP layer. Electroluminescence and dark current-voltage measurements show the separate effects of optical management and non-radiative dark current reduction.

Subfields: Civil and Structural Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/83e3446f8c0a246f67ba1242e2343c11f0851384

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Civil and Structural Engineering

1. J. Geisz
2. Martin A. Green
3. E. Sakr
4. Yubo Sun
5. Peter Bermel
6. Zhiguang Zhou

In Electrical and Electronic Engineering

1. Martin A. Green
2. Ewan D. Dunlop
3. Yoshihiro Hishikawa
4. Wilhelm Warta
5. K. Emery
6. J. Geisz
7. Daniel J. Friedman
8. M. Steiner

Citations in the corpus

• Building a Six-Junction Inverted Metamorphic Concentrator Solar Cell (2018, methodology): “The EL emitted under forward bias current injection was measured with a spectroradiometer and calibrated to overlap the dark I–V, as described in [7], [8], and [14].”
• Photovoltaic materials: Present efficiencies and future challenges (2016, unknown): “chart, Green’s tables, and publications (11, 19, 29).”
• Solar thermophotovoltaics: reshaping the solar spectrum (2016, background): “demonstrated a rear junction structure for III–Vmaterials as seen in Figure 10C, which produces similar and even better performance compared with traditional structures [118].”
• Solar cell efficiency tables (version 48) (2016, unknown): “3 NREL (5/13) NREL, high bandgap [46] Cells (chalcogenide) CIGS (thin film) 22.”
• Solar cell efficiency tables (version 43) (2014, unknown): “3 NREL (5/13) NREL, high bandgap [48] CIGS (thin film) 20.”
• Solar cell efficiency tables (version 44) (2014, unknown): “3 NREL (5/13) NREL, high bandgap [47] Cells (chalcogenide) CIGSS (Cd free) 20.”
• Solar cell efficiency tables (Version 45) (2015, background): “3 NREL (5/13) NREL, high bandgap [47] Cells (chalcogenide)”