Open AccessToward a planar black silicon technology for 50 μm-thin crystalline silicon solar cells
Author(s) -
Jaewon Song,
Yoonho Nam,
Minjoon Park,
Bongyoung Yoo,
Jun-Sik Cho,
Ralf B. Wehrspohn,
Jung-Ho Lee
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.0a1224
Subject(s) - materials science , optoelectronics , silicon , energy conversion efficiency , thin film , wafer , crystalline silicon , planar , black silicon , plasmonic solar cell , photovoltaic system , optics , photovoltaics , solar cell , quantum tunnelling , nanotechnology , monocrystalline silicon , ecology , computer graphics (images) , physics , biology , computer science
Auger and surface recombinations are major drawbacks that deteriorate a photon-to-electron conversion efficiencies in nanostructured (NS) Si solar cells. As an alternative to conventional frontside nanostructuring, we report how backside nanostructuring is beneficial for carrier collection during photovoltaic operation that utilizes a 50-μm-thin wafer. Ultrathin (4.3-nm-thin) zinc oxide was also effective for providing passivated tunneling contacts at the nanostructured backsides, which led to the enhancement of 24% in power conversion efficiency.