Communication Dans Un Congrès Année : 2024

Combining perovskite and quantum dots in carbon electrode-based photovoltaic devices

Résumé

Emerging photovoltaic (PV) technologies are constantly evolving to improve performance and stability while using processes compatible with large scale production. Two types of light-harvesting materials were assembled within a heterojunction: perovskite (PK) and quantum dots (QDs). They were processed with a mesoporous device architecture, and a carbon electrode. All manufacturing steps were developed under ambient atmosphere, to offer a low cost and stable solution with high potential for large scale production. The PV performance and durability of AVAI-doped traditional MAPbI3 perovskite combined with the unique absorption properties of CsPbBr3 QDs should help prepare devices combining PV activity and UV stability.1,2First, CsPbBr3 QDs were synthesized by ligand-assisted room temperature processing and compared with commercial QDs produced with the traditional hot-injection method. The two materials have similar optical properties, but differ by their morphology and chemical environment. Different types of PV devices were developed as presented in Figure 1. Device (a) acts as a reference: the traditional CH3NH3PbI3 formulation doped with 5% of AVAI (HOOC(CH2)4NH3I) was drop-casted through the TiO2/ZrO2/carbon mesoporous scaffold. Devices (b) and (c) combine the previous perovskite with various QDs formulations according respectively to sequential or combined deposition processes. A full study using various characterization techniques and aging campaigns conducted in both damp-heat and 1 sun conditions will be presented. Coupling QDs to perovskite allowed to obtain an absolute PCE increase of 8.5 % compared to using the perovskite alone.

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Dates et versions

hal-04737000 , version 1 (15-10-2024)

Identifiants

  • HAL Id : hal-04737000 , version 1

Citer

Fatou Diaw, Emilie Planes, Maria Bernechea, Lara Perrin, Lionel Flandin. Combining perovskite and quantum dots in carbon electrode-based photovoltaic devices. CARBON CLUB CONFERENCE 2024, Diamond-Horizon, Oct 2024, Online, France. ⟨hal-04737000⟩
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