Acta Optica Sinica, Volume. 33, Issue 9, 931003(2013)
Design and Fabrication of an Irregularly Shaped Distributed Bragg Reflector for Hetero-Junction with Intrinsic Thin Layer Solar Cells
An irregularly shaped distributed Bragg reflector (IDBR) for hetero-junction with intrinsic thin layer (HIT) solar cells is designed and fabricated according to the theory of multi-beam interference and the method of iteration. Four types of IDBRs [S1(500 nm+800 nm), S2(500 nm+900 nm), S3(500 nm+1000 nm), S4(500 nm+800 nm+1000 nm)] are compared and optimized. The result shows that the structure of S3 with two pairs of α-Si(32 nm)/SiN(61.78 nm) and three pairs of α-SiH(64 nm)/SiN(123.57 nm) is the most suitable structure. With the help of plasma enhanced chemical vapor deposition (PECVD), five pairs of α-SiH/SiN distributed Bragg reflector (DBR) multi-layer films is deposited on the back surface of HIT solar cell. The testing result shows that the reflectivity of S3 is larger than 90% in the wavelength range of 730~1155 nm, and larger than 95% in the wavelength range of 750~1110 nm, which shows the great potential for improving the absorption of light in the wavelength range of 1000~1155 nm (infrared wavelength range), and thus enhance the efficiency of HIT solar cell.
Get Citation
Copy Citation Text
Zhou Jian, Li Hongfei, Liu Yuchen, Tan Huizu, Liu Zhengxin. Design and Fabrication of an Irregularly Shaped Distributed Bragg Reflector for Hetero-Junction with Intrinsic Thin Layer Solar Cells[J]. Acta Optica Sinica, 2013, 33(9): 931003
Category: Thin Films
Received: Mar. 25, 2013
Accepted: --
Published Online: Aug. 8, 2013
The Author Email: Jian Zhou (zjian@mail.sim.ac.cn)