Controlling the preferred orientation of layered BiOI solar absorbers

Jagt, Robert A.; Huq, Tahmida N.; Börsig, Katharina M.; Sauven, Daniella; Lee, Lana C.; MacManus‐Driscoll, Judith L.; Hoye, Robert L. Z.

doi:10.1039/d0tc02076a

Cited by 30 publications

(52 citation statements)

References 40 publications

(46 reference statements)

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“…At the same time, the films had an open structure, which limited the shunt resistance. It was later shown the preferred orientation of the BiOI platelets grown by CVD could be controlled through the temperature of the BiI3 precursor and the temperature of the substrate [257], as discussed in Section 3.8. Growing c-axis oriented BiOI platelets resulted in compact film morphology, which improved the VOC from 0.7 V (a/baxis oriented) to 0.9 V (c-axis oriented).…”

Section: V-vi-vii Materialsmentioning

confidence: 97%

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

et al. 2021

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Lead-halide perovskites have demonstrated astonishing increases in power conversion efficiency in photovoltaics over the last decade. The most efficient perovskite devices now outperform industry-standard multi-crystalline silicon solar cells, despite the fact that perovskites are typically grown at low temperature using simple solution-based methods. However, the toxicity of lead and its ready solubility in water are concerns for widespread implementation. These challenges, alongside the many successes of the perovskites, have motivated significant efforts across multiple disciplines to find lead-free and stable alternatives which could mimic the ability of the perovskites to achieve high performance with low temperature, facile fabrication methods. This Review discusses the computational and experimental approaches that have been taken to discover lead-free perovskite-inspired materials, and the recent successes and challenges in synthesizing these compounds. The atomistic origins of the extraordinary performance exhibited by lead-halide perovskites in photovoltaic devices is discussed, alongside the key challenges in engineering such high-performance in alternative, next-generation materials. Beyond photovoltaics, this Review discusses the impact perovskite-inspired materials have had in spurring efforts to apply new materials in other optoelectronic applications, namely light-emitting diodes, photocatalysts, radiation detectors, thin film transistors and memristors. Finally, the prospects and key challenges faced by the field in advancing the development of perovskite-inspired materials towards realization in commercial devices is discussed.

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Section: V-vi-vii Materialsmentioning

confidence: 97%

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

et al. 2021

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“…This preferred orientation is favorable for charge extraction in a vertically structured device. [57] Cs 3 Sb 2 Cl x I 9-x had smaller grains (≈250 nm in size) with a lessdense morphology when grown on mesoporous TiO 2 /FTO, which we nonetheless found to allow devices with high photoconversion efficiency. [56] Critically, both BiOI and Cs 3 Sb 2 Cl x I 9-x have bandgaps close to the optimum value of 1.9 eV for IPV applications (1.93 eV for BiOI and 1.95 eV for Cs 3 Sb 2 Cl x I 9-x ), as shown in our previous works.…”

Section: Bioi and Cs 3 Sb 2 CL X I 9-x Photovoltaic Devicesmentioning

confidence: 70%

“…This preferred orientation is favorable for charge extraction in a vertically structured device. [ 57 ] Cs 3 Sb 2 Cl x I 9‐ x had smaller grains (≈250 nm in size) with a less‐dense morphology when grown on mesoporous TiO 2 /FTO, which we nonetheless found to allow devices with high photoconversion efficiency. [ 56 ]…”

Section: Resultsmentioning

confidence: 92%

Lead‐Free Perovskite‐Inspired Absorbers for Indoor Photovoltaics

Peng

Huq

Mei

et al. 2020

Advanced Energy Materials

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sources at 1000 lux had an irradiance of 340 and 320 µW cm −2 , respectively. The accuracy of the light meter and power meter is the primary determinant of the uncertainty in the measured PCE values, which amounts to approximately ±6-7%, as can be determined from a straightforward uncertainty analysis based on the device testing conditions and the specifications of the power and light meters. Consequently, the PCE values are reported herein with 1 decimal place.

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“…[ 266 ] However, the mobility is highly anisotropic, and we recently showed that an a / b ‐axis preferred orientation could be achieved by controlling the growth temperature during t‐CVD growth, such that the high‐mobility planes connected the top and bottom electrodes in the photovoltaic device stack. [ 298 ] As a result, external quantum efficiencies reaching up to 80% at 450 nm wavelength were achieved in BiOI devices. [ 268 ]…”

Section: Potential Of Emerging Nontoxic Materials For Indoor Photovol...mentioning

confidence: 99%

Emerging Indoor Photovoltaic Technologies for Sustainable Internet of Things

Pecunia

Occhipinti

Hoye

2021

Advanced Energy Materials

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The Internet of Things (IoT) provides everyday objects and environments with “intelligence” and data connectivity to improve quality of life and the efficiency of a wide range of human activities. However, the ongoing exponential growth of the IoT device ecosystem—up to tens of billions of units to date—poses a challenge regarding how to power such devices. This Progress Report discusses how energy harvesting can address this challenge. It then discusses how indoor photovoltaics (IPV) constitutes an attractive energy harvesting solution, given its deployability, reliability, and power density. For IPV to provide an eco‐friendly route to powering IoT devices, it is crucial that its underlying materials and fabrication processes are low‐toxicity and not harmful to the environment over the product life cycle. A range of IPV technologies—both incumbent and emerging—developed to date is discussed, with an emphasis on their environmental sustainability. Finally, IPV based on emerging lead‐free perovskite‐inspired absorbers are examined, highlighting their status and prospects for low‐cost, durable, and efficient energy harvesting that is not harmful to the end user and environment. By examining emerging avenues for eco‐friendly IPV, timely insight is provided into promising directions toward IPV that can sustainably power the IoT revolution.

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Controlling the preferred orientation of layered BiOI solar absorbers

Abstract: Bismuth oxyiodide has anisotropic transport properties, and optimal device performance requires control over its preferred orientation. We find that this preferred orientation can be finely tuned through the precursor and substrate temperatures.

Cited by 30 publications

References 40 publications

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

Lead‐Free Perovskite‐Inspired Absorbers for Indoor Photovoltaics

Emerging Indoor Photovoltaic Technologies for Sustainable Internet of Things

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