Effects of vacuum-ultraviolet radiation on the desorption of molecular contaminants

Effects of contamination on solar cell coverglass

“…While one set of samples was under photo-deposition, the other three sets of samples were isolated by a copper cryogenic shroud and not exposed to the contaminant and UV, as illustrated in Figure 2. The detail of the CERT chamber design/setup can be found in [5]. Photography of coverglass sample triplicates (type 1-8 herein) and a fused silica as the witness sample on the sample holder used for the contaminant photo-deposition process in the CERT chamber.…”

“…Photography of coverglass sample triplicates (type 1-8 herein) and a fused silica as the witness sample on the sample holder used for the contaminant photo-deposition process in the CERT chamber. The contaminant deposition procedures involved mounting the sample holders in the vacuum chamber, pumping down to the baseline pressure of low 10.8 torr, establishing 978-1-4244-5892-9/101$26.00 ©2010 IEEE thermal equilibrium of the vacuum chamber apparatus, depositing a contaminant film onto the coverglass, and exposing to UV irradiation to photo-fix the contaminant for 16 hours or longer [5]. The coverglass sample holders were kept at approximately -20°C, and the effusion cell temperatures for DOP and DC704 deposition were at 72°C and 95°C, respectively.…”