A Computational Approach toward the Enhanced Performance of Graphene–Perovskite Schottky Solar Cells

Abstract

Herein, a device modeling of graphene–perovskite Schottky junction solar cells is conducted by AFORS‐HET package. It is found that the back and front contact work function (WF) and the absorber doping concentration have important effects on cell performance. The front contact with a high WF of 5.4 eV is suggested to form the desired Schottky junction, which contributes to better efficiency. Back contact WF lower than 4.2 eV is desired to form ohmic contact. Appropriate doping concentration (1016 cm−3) of perovskite favors the efficiency improvement. Under the optimal conditions, the graphene–perovskite Schottky solar cells can obtain a conversion efficiency up to 21.13%, but at a lower cost and much simpler structure comparable with the planar heterojunction perovskite solar cells. These results can provide guidance for further performance improvement of perovskite‐based Schottky solar cells.

Charge Carrier Dynamics at Carbon/Perovskite Interface: Implications on Carbon‐Based HTM‐Free Solar Cell Stability

“…The WF of the electrodes (C and Au) are measured using kelvin probe as 5.1 eV indicating the capability of forming a Schottky junction with rectifying behavior ensuring the effective electron blockage and hole extraction at the counter electrode–perovskite interface as shown in the litreature. [ 9,11 ] The device architecture selected for the study is schematically represented in Figure a,b. Figure 1c portrays the current–voltage (IV) characteristics of AuPSC and CPSC.…”

Design of Aluminum Doped ZnO/Phenyl-C-Butyric Acid Methyl Ester/Tungsten Disulfide (AZO/PCBM/WS2) Heterojunction-Based Device for Applications in Solar Cells and Broadband Self-Powered Photodetectors

“…From these plots, it is seen that at a higher doping density, the EQE and responsivity value also decreased. This can be attributed to higher Auger recombination that results in the decrease in EQE and responsivity values. − …”

A review of perfect absorbers based on the two dimensional materials in the visible and near-infrared regimes

“…On the other hand, at present, the most common way to improve the light absorption of 2D materials is to use metamaterials or all-dielectric metasurfaces. Actually, some special heterojunction structures based on the 2D materials can effectively enhance the light-matter interaction [113][114][115][116][117]. Although this field is still at a young stage, some applications for the photodetector [118][119][120][121], solar cell [122][123][124][125] and laser [126][127][128][129] have been reported.…”