While BTBT offers numerous advantages, it also presents several challenges:
1. Fabrication Complexity: Creating devices that exploit BTBT requires precise control over material properties and dimensions, which can be challenging at the nanoscale. 2. Leakage Currents: Unintended tunneling can lead to leakage currents, affecting the performance and reliability of nanoscale devices. 3. Material Limitations: Not all materials exhibit efficient BTBT, necessitating the use of specific semiconductors or heterostructures.
