Priming material for organometallic resist

1. A method of film formation, the method comprising:

receiving a substrate;

dispensing a priming material on the substrate, wherein the priming material comprises water; and

applying an organometallic resist solution over the priming material on the substrate, thereby forming an organometallic resist layer over the priming material.

2. The method of claim 1 , further comprising:

baking the priming material and the organometallic resist layer at a first temperature;

irradiating the organometallic resist layer with a radiation source; and

baking the priming material and the organometallic resist layer at a second temperature different from the first temperature.

3. The method of claim 2 , wherein the first temperature is between about 80° C. and about 120° C.

4. The method of claim 2 , wherein the second temperature is greater than the first temperature.

5. The method of claim 2 , wherein the radiation source is an extreme ultraviolet (EUV) source.

6. The method of claim 1 , wherein the organometallic resist solution comprises an organometallic compound that includes tin (Sn), hafnium (Hf), zirconium (Zr), manganese (Mg), aluminum (Al), vanadium (V), titanium (Ti), chromium (Cr), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), gallium (Ga), or iron (Fe).

7. The method of claim 1 , wherein a water content of the organometallic resist layer is smaller than a water content of the priming material.

8. The method of claim 1 , wherein the organometallic resist solution is free of water.

9. A method, comprising:

receiving a substrate;

applying a priming material on the substrate, wherein the priming material comprises a compound;

forming an organometallic resist layer on the priming material, wherein the organometallic resist layer comprises an organometallic compound; and

irradiating the organometallic resist layer with an extreme ultraviolet (EUV) source to accelerate a condensation reaction of the compound and the organometallic compound,

wherein the compound is water.

10. The method of claim 9 , further comprising:

before the irradiating the organometallic resist layer with the EUV source, baking the priming material and the organometallic resist layer at a first temperature; and

after the irradiating the organometallic resist layer with the EUV source, baking the priming material and the organometallic resist layer at a second temperature greater than the first temperature,

wherein the irradiating the organometallic resist layer with the EUV source forms a latent pattern on the organometallic resist layer.

11. The method of claim 10 , wherein the baking of the priming material and the organometallic resist layer at the first temperature generates a concentration gradient of the compound in the organometallic resist layer.

12. The method of claim 11 , wherein the concentration gradient includes a first concentration near the priming material and a second concentration away from the priming material, wherein the first concentration is greater than the second concentration.

13. The method of claim 9 , wherein the organometallic compound includes tin (Sn), hafnium (Hf), zirconium (Zr), manganese (Mg), aluminum (Al), vanadium (V), titanium (Ti), chromium (Cr), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), gallium (Ga), or iron (Fe).

14. The method of claim 9 , wherein the priming material comprises between about 0.1% and about 10% of water.

15. The method of claim 9 , wherein the priming material further comprises a ketone or an alcohol.

16. The method of claim 9 , wherein a water content of the organometallic resist layer is smaller than a water content of the priming material.

17. A method, comprising:

receiving a substrate;

applying a priming material on the substrate in a first ambient humidity;

forming an organometallic resist layer on the priming material in a second ambient humidity lower than the first ambient humidity, wherein the organometallic resist layer comprises an organometallic compound; and

irradiating the organometallic resist layer with an extreme ultraviolet (EUV) source to accelerate a condensation reaction of the organometallic compound.

18. The method of claim 17 , further comprising:

changing the first ambient humidity to the second ambient humidity.

19. The method of claim 17 , wherein the applying of the priming material on the substrate in the first ambient humidity includes supplying saturated air to the substrate.

20. The method of claim 17 ,

wherein the first ambient humidity is between about 20% and about 80%, and

wherein the second ambient humidity is substantially 0%.