HF Compatibility Study on KrF and I-Line System Resist
Sicong Chen,
Christopher Lim,
Vincent Chai
Abstract:Advance nanoscale patterning technology requires high resolution lithography, from ultraviolet (UV, i-line system) to deep ultraviolet (DUV, KrF system) until extreme ultraviolet (EUV), but the compatibility study of new resist types and wet etchant is lacking. The compatibility is defined as the duration of a photoresist being able to withstand in wet oxide etchant. Poor compatibility has potential resist lifting and/or penetration during wet etch process, which causes electronic device performance drifting. … Show more
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