Lg Electronics Inc.

Shangrao Jinko Solar Technology Development Co., Ltd

Hae Jong Cho

Sung Jin Kim

Ji Soo Ko

Ju Hwa Cheong

Young Gu Do

Won Jae Chang

Jun Yong Ahn

Discussed is a solar cell including a single crystalline silicon substrate, a polycrystalline silicon layer on a back surface and side surfaces of the single crystalline silicon substrate, a diffusion region on a front surface of the single crystalline silicon substrate, a front passivation layer on the diffusion region, a back passivation layer on the polycrystalline silicon layer, a first electrode connected to the diffusion region through the front passivation layer, and a second electrode connected to the polycrystalline silicon layer through the back passivation layer, wherein the side surfaces of the single crystalline silicon substrate includes a first portion without the polycrystalline silicon layer and a second portion with the polycrystalline silicon layer.

Method of manufacturing solar cell

Provided are a method of manufacturing a solar cell, including a polycrystalline silicon layer forming operation of forming a polycrystalline silicon layer containing a first dopant on a back surface of a semiconductor substrate formed of a single crystal silicon material including a base region, a front texturing operation of texturing a front surface of the semiconductor substrate and simultaneously removing the polycrystalline silicon layer formed on the front surface of the semiconductor substrate, a second conductive region forming operation of forming a second conductive region by diffusing a second dopant on the front surface of the semiconductor substrate, a passivation layer forming operation of forming a first passivation layer on the polycrystalline silicon layer formed on the back surface of the semiconductor substrate and forming a second passivation layer on the second conductive region of the front surface of the semiconductor substrate, and an electrode forming operation of forming a first electrode connected to the polycrystalline silicon layer through the first passivation layer and forming a second electrode layer at the second conductive region through the second passivation layer.

Growing community of inventors

Seoul, South Korea

Hae Jong Cho