Title :
Hydrogenated Amorphous Silicon Solar Cells on Textured Flexible Substrate Copied From a Textured Glass Substrate Template
Author :
Yang, Chieh-Hung ; Hsueh, Chun-Yuan ; Yeh, Dan-Ju ; Ho, Chung-I ; Leu, Chyi-Ming ; Yeh, Yung-Hui ; Lee, Si-Chen
Author_Institution :
Grad. Inst. of Electron. Eng. & Grad. Inst. of Photonic & Optoelectron., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
It is difficult to prepare textured surface on flexible substrate reproducibly for solar cell application. A novel method is developed that uses polyimide film to coat on a textured glass substrate as a template substrate and then peeled off as the flexible substrate. The surface morphology of the flexible substrate could faithfully reproduce the template as measured by atomic force microscopy. The hydrogenated amorphous silicon (a-Si:H) thin film solar cell was fabricated on the flexible substrate successfully. The results of I-V characteristics and spectral response confirm that the efficiency of textured solar cells increases as compared to that on a flat substrate. This technology will find application in making complicated reusable substrate for flexible electronics.
Keywords :
amorphous semiconductors; atomic force microscopy; elemental semiconductors; flexible electronics; glass; polymer films; silicon; solar cells; surface morphology; I-V characteristics; Si; atomic force microscopy; flexible electronics; hydrogenated amorphous thin film silicon solar cells; polyimide film; spectral response; surface morphology; textured flexible substrate; textured glass substrate template; Glass; Photovoltaic cells; Silicon; Substrates; Surface morphology; Surface texture; Surface treatment; Amorphous silicon; flexible electronics; solar cell;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2011.2159259
