Molybdenum back contact electrode for CIGS-Based solar cell by chemical vapor transport of MoO3(OH)2

Abstract

Molybdenum thin flim has been used for the back contact electrode in CIGS-based compound solar cells due to its low resistivity of the Mo/CIGS contact. In this study, our research group suggested the new deposition technique using the volatile vapor phase Mo03(OH)2 during hydrogen reduction of Mo03 powders. Mo02 thin flim with ~ 1μm thickness was successfully deposited by the chemical vapor transport of volatile Mo03 (OH)2 and subsequently, molybdenum thin flim was obtained by hydrogen reduction of the deposited flim. Synthesizing thin films via chemical vapor transport offers a number of potential advantages for large scale thin flim deposition for back contact electrodes because it is a relatively simple technique based on s이jd state reactions and can be utilized a widely available, low-cost powder source that is easily stored and handled. Also, this process has a environment-friendly process with essentially no by-products. Therefore, Molybdenum flim synthesis using chemical vapor transport of volatile Mo03(OH)2 can be available for the back-contact electrode of CIGS-based solar