Nanoparticle-coated n-ZnO/p-Si photodiodes with improved photoresponsivities and acceptance angles for potential solar cell applications.
In this work, n-ZnO/p-Si photodiodes were fabricated and characterized to explore their potential applications in solar cells. With a coating of silica nanoparticles, we observed the enhancement of photoresponsivity and acceptance angle at a wavelength between 400 and 650 nm. The 17.6% increase of the photoresponsivity over the conventional device is due to the improved optical transmission toward the semiconductor through the silica nanoparticles. Furthermore, the acceptance angle of the nanoparticle coated device is dramatically increased, which is attributed to the effect of Bragg diffraction.
Chen
Cheng-Pin
CP
Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1, Roosevelt Road, Section 4 Taipei 106, Taiwan.
Lin
Pei-Hsuan
PH
Chen
Liang-Yi
LY
Ke
Min-Yung
MY
Cheng
Yun-Wei
YW
Huang
JianJang
J
D003460:Crystallization / Q000379:methods*; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008029:Lighting / Q000295:instrumentation*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D012666:Semiconductors; D012825:Silicon / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
D046911:Macromolecular Substances; D015034:Zinc Oxide; D012825:Silicon