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US 12,349,502 B2Granted
Solar cell and method for manufacturing the same
AssigneeTrina Solar Co., Ltd.
InventorsJungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim
Life of this patent
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Abstract
A solar cell can include a silicon semiconductor substrate; an oxide layer on a first surface of the silicon semiconductor substrate; a polysilicon layer on the oxide layer; a diffusion region at a second surface of the silicon semiconductor substrate; a dielectric film on the polysilicon layer; a first electrode connected to the polysilicon layer through the dielectric film; a passivation film on the diffusion region; and a second electrode connected to the diffusion region through the passivation film.
Claims16
A solar cell, comprising:
- a semiconductor substrate;
- a tunnel layer on a first surface of the semiconductor substrate;
- a first conductive type semiconductor region deposited on the tunnel layer;
- an emitter region deposited on a second surface opposite to the first surface of the semiconductor substrate;
- a first passivation film on the first conductive type semiconductor region;
- and
- a first electrode connected to the first conductive type semiconductor region through an opening in the first passivation film, the first electrode including:
- a plurality of first finger electrodes spaced apart from each other and extended in parallel in a first direction;
- and
- a first bus bar connected to the plurality of first finger electrodes
- wherein at least part of the first electrode is depressed and formed in the first conductive type semiconductor region, the first electrode includes a metal material and a glass frit, and an amount of glass frit per unit volume in the plurality of finger electrodes is less than an amount of glass frit per unit volume in the bus electrode.
8 more elements
Dependencies are inferred from the claim text.