In most cameras, you’re probably not touching bare silicon at all. The sensor usually has a protective cover glass that also serves optical functions such as IR filtering, and that is what normal “sensor cleaning” methods are meant for. If the residue is on that cover glass, clean it the same way you would clean a sensor filter/cover glass.

If the bare sensor surface is truly exposed, the outlook is poor: the surface is delicate, not smooth, and may include microlenses and bond wires that are very easy to damage. Community consensus is that there’s likely no practical way to clean actual residue from an exposed sensor without risking permanent damage.

If you still want to experiment because the camera is disposable-value, test any solvent on the tape adhesive separately first and research compatibility carefully. But be aware that trying solvents on the actual exposed die is risky and may destroy it. In short: safe cleaning is generally only realistic for the sensor’s protective cover glass, not a genuinely exposed CMOS surface.