Hot-carrier phenomenon in perovskite solar cells under white light emitting diode DOI Creative Commons
Akrajas Ali Umar, Nabilah Alias, Marjoni Imamora Ali Umar

et al.

Discover Energy, Journal Year: 2024, Volume and Issue: 4(1)

Published: Oct. 8, 2024

Hot-carrier solar cells offer the potential for enhanced power conversion efficiency by tapping into kinetic energy of hot carriers generated upon sunlight absorption. This involves using specially designed materials capable efficiently extracting and utilizing these to produce electrical power. Here, we observed such a carrier effect in hexamine doped methylammonium lead triiodide perovskite when exposed 100 mW/cm2 5000 K white LED light. We discovered that exhibited remarkable efficiency, reaching up 54.22% with Voc (open-circuit voltage) Jsc (short-circuit current density) values were measured at 1.10 V 54 mA/cm2, respectively. In comparison, under similar conditions but simulator, remained below 20%. Our results suggest high PCE irradiation is due fine resonance between light band gap energy, enabling long lifetime then allowing massive photovoltaics process. These findings highlight alternative achieve carrier's efficient generation converting wavelength match absorber gap.

Language: Английский

Enigma of Sustainable CO2 Conversion to Renewable Fuels and Chemicals Through Photocatalysis, Electrocatalysis, and Photoelectrocatalysis: Design Strategies and Atomic Level Insights DOI Open Access

Diksha Suri,

Srimanta Das,

Shivani Choudhary

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Growing global population, escalating energy consumption, and climate change threaten future security. Fossil fuel combustion, primarily coal, oil, natural gas, exacerbates the greenhouse effect driving warming through CO

Language: Английский

Citations

3
Enhancing Light Utilization Efficiency of Semi‐Transparent Perovskite Solar Cells via Tailored Interfacial Engineering DOI
Bhavna Sharma, Rabindranath Garai, Mohammad Adil Afroz

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(39)

Published: July 30, 2024

Abstract Semi‐transparent perovskite solar cells (ST‐PSCs) are promising for their application in building integrated photovoltaics (BIPVs). For BIPVs, a light utilization efficiency (LUE) > 2.5 is required which multiplication of average visible transmittance (AVT) and power conversion (PCE). Generally, semitransparency achieved by reducing film thickness increases AVT but decreases PCE resulting lower LUE. Here, an interface engineering strategy employed on wide bandgap thin absorber layer to increase The study employs three different alkylamine hydrochlorides molecules with varied alkyl chain length, viz., 2‐chloroethylamine‐hydrochloride, 3‐chloropropylamine‐hydrochloride, 4‐chlorobutyalamine‐hydrochloride at perovskite/electron transport (ETL) investigates effect crystallization. Further, it demonstrated that can strongly interact suppress non‐radiative recombination facilitating charge the perovskite/ETL interface. Devices post‐treated interfacial layer, demonstrate higher LUE 3.45% (PCE 14.11%) ≈25% (400–800 nm), V oc 1.23 V. Moreover, unencapsulated devices retain ≈89% initial after storage 1500 h under relative humidity ≈35–40%. This provides efficient approach improve stability ST‐PSCs energy‐efficient smart windows.

Language: Английский

Citations

15
Organic Spacers Modulated Low Dose X‐Ray Detection in Hybrid Halide 2D Perovskites: Unveiling Exciton Dynamics DOI Open Access
Shivani Choudhary, Joydip Ghosh,

Shantanu C. Pathak

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

In this study, we investigate how modulating organic spacers in perovskites influences their X-ray detection performance and reveal the mechanism of low-dose with high sensitivity using femtosecond-transient absorption spectroscopy (fs-TAS). Particularly, employ N,N,N',N'-tetramethyl-1,4-phenylenediammonium (TMPDA) N,N-dimethylphenylene-p-diammonium (DPDA) as to synthesize 2D perovskite single crystals (SCs). We find that DPDA-based SCs exhibit reduced interplanar spacing between inorganic layers, leading increased lattice packing. Density functional theory (DFT) results indicate effective mass lower distortion (DPDA)PbBr4 suppressing formation self-trapped exciton (STEs) electron-phonon coupling enhancing carrier delocalization these SCs. Further, measurements demonstrates higher than (TMPDA)PbBr4, attributed its enhanced delocalization, mobility-lifetime product. The limit (LoD) for is determined be 13 nGy/s, significantly both commercial detectors state-of-the-art perovskite-based detectors. Furthermore, fs-TAS study reveals prolonged hot STE cooling decay lifetimes, which directly correlate sensitivity. This highlights impact on performance, providing a framework designing ultra-low LoD essential health security applications.

Language: Английский

Citations

1
Sensitive detection of bilirubin using highly luminescent benzylamine capped CH3NH3PbBr3 perovskite quantum dots DOI
Prathul Nath,

Manisha Chatterjee,

Anshu Kumar

et al.

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2024, Volume and Issue: 456, P. 115803 - 115803

Published: June 1, 2024

Language: Английский

Citations

4
Decoding recombination dynamics in perovskite solar cells: an in-depth critical review DOI
Ramkrishna Das Adhikari, Mayur Jagdishbhai Patel, Himangshu Baishya

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review systematically analyses the recombination pathways in PSCs, unveils cutting-edge suppression strategies, and underscores potential of ML optimizing device performance expediting commercial integration.

Language: Английский

Citations

0
Unravelling Singlet Fission in Polymer Materials: Mechanisms, Challenges, and Prospects for High-Efficiency Solar Cells DOI

Tejasvini Sharma,

Mohammad Adil Afroz, Soumitra Satapathi

et al.

ACS Photonics, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 13, 2024

Language: Английский

Citations

1
Hot-carrier phenomenon in perovskite solar cells under white light emitting diode DOI Creative Commons
Akrajas Ali Umar, Nabilah Alias, Marjoni Imamora Ali Umar

et al.

Discover Energy, Journal Year: 2024, Volume and Issue: 4(1)

Published: Oct. 8, 2024

Hot-carrier solar cells offer the potential for enhanced power conversion efficiency by tapping into kinetic energy of hot carriers generated upon sunlight absorption. This involves using specially designed materials capable efficiently extracting and utilizing these to produce electrical power. Here, we observed such a carrier effect in hexamine doped methylammonium lead triiodide perovskite when exposed 100 mW/cm2 5000 K white LED light. We discovered that exhibited remarkable efficiency, reaching up 54.22% with Voc (open-circuit voltage) Jsc (short-circuit current density) values were measured at 1.10 V 54 mA/cm2, respectively. In comparison, under similar conditions but simulator, remained below 20%. Our results suggest high PCE irradiation is due fine resonance between light band gap energy, enabling long lifetime then allowing massive photovoltaics process. These findings highlight alternative achieve carrier's efficient generation converting wavelength match absorber gap.

Language: Английский

Citations

0