AR™ 254 is an organic, thermally cross-linking bottom anti-reflectant for 248 nm (KrF) photoresist. It has excellent gap filling and planarizing properties that are key requirements for advanced semiconductor devices having FinFET structures. AR™ 254 has a high etch rate to reduce substrate damage and optimal optical parameters to minimize reflectance.
Features
Benefits
Figure 1: Excellent Gap Fill at 10 nm Trench
Polymer |
Etch Rate O2/Ar
|
---|---|
KrF resist |
0.45 |
Conventional KrF BARC |
0.60 |
AR™ 254 |
1.31 |
Figure 2: Fast Etch Rate
|
Focus offset |
|
---|---|---|
+0.15sum |
+0.05um Best focus |
-0.05um |
|
|
|
Figure 3: Excellent Resist Profile on AR™ 254