Prediction and realisation of high mobility and degenerate p-type conductivity in CaCuP thin films.

ABSTRACT: Phosphides are interesting candidates for hole transport materials and p-type transparent conducting applications, capable of achieving greater valence band dispersion than their oxide counterparts due to the higher lying energy and increased size of the P 3p orbital. After computational identification of the indirect-gap semiconductor CaCuP as a promising candidate, we now report reactive sputter deposition of phase-pure p-type CaCuP thin films. Their intrinsic hole concentration and hole mobility exceed 1 × 10²⁰ cm^-3 and 35 cm² V^-1 s^-1 at room temperature, respectively. Transport calculations indicate potential for even higher mobilities. Copper vacancies are identified as the main source of conductivity, displaying markedly differen

SUBMITTER: Willis J 

PROVIDER: S-EPMC9132065 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature