Enhancement of photovoltaic effect in La<sub>0.9</sub>Sr<sub>0.1</sub>MnO<sub>3</sub>/Si heterojunction by side illumination

Jie Xing, Kun Zhao, Guo Zhen Liu, Meng He, Kui Jin, Hui Lu

Journal of Physics D Applied Physics · 2007 · 15 citations · 16 references

Concepts

Abstract

The side-illumination-enhanced photovoltaic effect has been studied in La0.9Sr0.1MnO3/Si heterojunctions fabricated by laser molecular beam epitaxy. When a He–Ne laser illuminated the La0.9Sr0.1MnO3 film surface, a stable photovoltage was produced and the responsivity is ~0.17 mV mW−1. An enhancement of the photovoltaic effect occurred when the La0.9Sr0.1 MnO3/Si interface was illuminated directly by side illumination, and the steady responsivity reached ~6.87 mV mW−1. This work demonstrates an effective way to improve the photovoltaic responsivity of the perovskite oxide heterojunctions.

References

16