All‐Inorganic Perovskite Photovoltaics

Jena, Ajay Kumar; Guo, Zhanglin; Miyasaka, Tsutomu

doi:10.1002/9783527826391.ch9

Cited by 1 publication

(1 citation statement)

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“…Photovoltaic devices have seen a wide-scale growth in research interest over the past decades in pursuing a diversified and sustainable energy grid, including perovskite solar cells which have shown peak power conversion efficiencies reaching 26.1% [1]. Perovskites are described by an ABX3, where A is either an inorganic (Cs + or Rb + ) or organic (formamidinium, FA + , or methylammonium, MA + ) cation, B is a divalent metal cation (Pb 2+ or Sn 2+ ), and X is a halide anion (I -, Br -, or Cl -) [2]. Partial substitution at the cation and anion sites, such as alloying FA + with Cs + cations, allows for fine tuning the phase stability of perovskites and their optical properties [3].…”

Section: Introductionmentioning

confidence: 99%

Unraveling device evolution through multimodal in situ x-ray characterizations in halide perovskite photovoltaics

Rahman,

Sharma,

Perini

et al. 2023

X-Ray Nanoimaging: Instruments and Methods VI

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In situ multimodal microscopic x-ray characterizations demonstrate their unique capabilities in revealing the mechanisms of material degradation and the pathways for mitigation in energy harvesting applications such as halide perovskite solar cells. Despite the excellent device performance exhibited by halide perovskites, their sensitive nature and material interfaces necessitate a precisely controlled and tunable characterization environment to identify the sources of device performance loss. In this work, we designed an in-situ sample chamber that allows the control of various environmental conditions, including heat, illumination, and bias, while simultaneously collecting chemical (X-ray fluorescence, XRF), optical (X-ray Excited Optical Luminescence, XEOL), and performance (X-ray Beam Induced Current, XBIC) measurements on functional devices. The integrated thermoelectric cooler module of the designed chamber enables controlled heating up to 100 °C and rapid cooling back down to room temperature. This allows simultaneous multimodal XRF, XEOL and XBIC signal collections on Cs0.05FA0.95PbI3 perovskite devices at various temperatures. The results show increasing homogeneity in the XBIC maps and continuous reduction in XEOL intensity, with a redshift in XEOL peak positions as sample temperatures increase. The results of the simultaneous multimodal study pave the way for improved in situ sample environments for future photovoltaic device characterizations.

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Section: Introductionmentioning

confidence: 99%