Drive-level capacitance profiling

Drive-level capacitance profiling (DLCP) is a type of capacitance–voltage-profiling characterization technique developed specifically for amorphous and polycrystalline materials, which have more anomalies such as deep levels, interface states, or non-uniformities.

Whereas in standard C–V profiles the charge response is assumed to be linear (dQ = CdV), in DLCP profiles the charge response is expected to have significant non-linear behavior (dQ = C0dV + C1(dV)2 + C2(dV)3) due to the significant larger AC-signal amplitude used in the DLCP technique.

DLCP can yield, like admittance spectroscopy, both the spatial and the energetic distribution of defects. The energetic distribution is obtained by varying the frequency of the AC signal, whereas the spatial distribution is sustained by modifications in the applied DC-bias.

DLCP is a strictly dynamic measurement, meaning that the steady-state behavior recorded in a C–V profile is discarded. As a result, DLCP is insensitive to interface states.

References

Heath, Jennifer T., J. David Cohen, William N. Shafarman. "Bulk and MetaStable Defects in CuIn(1-x)Ga(x)Se2 Thin Films Using Drive Level Capacitance Profiling." Journal of Applied Physics. 95.3 (2004).

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.