Publications by authors named "Jakob Bombsch"
Origin of Interface Limitation in Zn(O,S)/CuInS-Based Solar Cells.
ACS Appl Mater Interfaces
February 2022
Article Synopsis
- CuInS grown under copper-rich conditions shows high optical quality but faces poor solar cell performance due to charge carrier recombination at the buffer/CuInS interface.
- The study uses different spectroscopic techniques and electrical analysis to identify the interface recombination issues in Zn(O,S)/CuInS devices.
- The findings suggest that while energy-level alignment isn't the main problem, defects near the interface are likely causing the performance-limiting recombination.
Article Synopsis
- The study investigates how heavy alkali postdeposition treatment (PDT) improves the efficiency of Cu(In,Ga)Se thin-film solar cells using photoelectron spectroscopy.
- It explores the surface changes in the materials after treatments with NaF and NaF/RbF, noting a copper deficiency that worsens with the addition of Rb.
- The findings suggest the formation of a Rb-In-Se compound on the surface, along with significant alterations in the electronic structure of Cu(In,Ga)Se due to the RbF treatment.
Functionalized Nickel Oxide Hole Contact Layers: Work Function versus Conductivity.
ACS Appl Mater Interfaces
November 2017
Nickel oxide (NiO) is a widely used material for efficient hole extraction in optoelectronic devices. However, its surface characteristics strongly depend on the processing history and exposure to adsorbates. To achieve controllability of the electronic and chemical properties of solution-processed nickel oxide (sNiO), we functionalize its surface with a self-assembled monolayer (SAM) of 4-cyanophenylphosphonic acid.
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