NDLI: Efficient planar n-i-p type heterojunction flexible perovskite solar cells with sputtered TiO<sub>2</sub> electron transporting layers

Content Provider	Royal Society of Chemistry (RSC)
Author	Hong, Chang Kook Inamdar, A. I. Mali, Sawanta S. Im, Hyunsik Shim, Sang Eun
Copyright Year	2017
Abstract	The development of hybrid organo-lead trihalide perovskite solar cells (PSCs) comprising an electron transporting layer (ETL), a perovskite light absorber and a hole transporting layer (HTL) has received significant attention for their potential in efficient PSCs. However, the preparation of a compact and uniform ETL and the formation of a uniform light absorber layer suffer from a high temperature processing treatment and the formation of unwanted perovskite islands, respectively. A low temperature/room temperature processed ETL is one of the best options for the fabrication of flexible PSCs. In the present work, we report the implementation of a room temperature processed compact TiO2 ETL and the synthesis of extremely uniform flexible planar PSCs based on methylammonium lead mixed halides MAPb(I1−xBrx)3 (x = 0.1) via RF-magnetron sputtering and a toluene dripping treatment, respectively. The compact TiO2 ETLs with different thicknesses (30 to 100 nm) were directly deposited on a flexible PET coated ITO substrate by varying the RF-sputtering time and used for the fabrication of flexible PSCs. The photovoltaic properties revealed that flexible PSC performance is strongly dependent on the TiO2 ETL thickness. The open circuit voltage (VOC) and fill factor (FF) are directly proportional to the TiO2 ETL thickness while the 50 nm thick TiO2 ETL shows the highest current density (JSC) of 20.77 mA cm−2. Our controlled results reveal that the room temperature RF-magnetron sputtered 50 nm-thick TiO2 ETL photoelectrode exhibits a power conversion efficiency (PCE) in excess of 15%. The use of room temperature synthesis of the compact TiO2 ETL by RF magnetron sputtering results in an enhancement of the device performance for cells prepared on flexible substrates. The champion flexible planar PSC based on this architecture exhibited a promising power conversion efficiency as high as 15.88%, featuring a high FF of 0.69 and VOC of 1.108 V with a negligible hysteresis under AM 1.5 G illumination. Furthermore, the mechanical bending stability revealed that the fabricated devices show stable PCE up to 200 bending cycles. The interface properties revealed that the 50 nm thick TiO2 ETL provides superior charge injection characteristics and low internal resistance. The present work provides a simplistic and reliable approach for the fabrication of highly efficient stable flexible perovskite solar cells.
Starting Page	3095
Ending Page	3104
Page Count	10
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	9
Issue Number	9
Journal	Nanoscale
DOI	10.1039/c6nr09032j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	PSC Open-circuit voltage Toluene Polyethylene terephthalate Amplitude modulation Internal resistance Sputtering Solar cell Perovskite Expected shortfall JSC Electric current Cavity magnetron Hysteresis
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Hematite electron-transporting layers for environmentally stable planar perovskite solar cells with enhanced energy conversion and lower hysteresis

Yttrium-substituted nanocrystalline TiO₂ photoanodes for perovskite based heterojunction solar cells

In situ processed gold nanoparticle-embedded TiO₂ nanofibers enabling plasmonic perovskite solar cells to exceed 14% conversion efficiency

Perovskite photovoltaics featuring solution-processable TiO₂ as an interfacial electron-transporting layer display to improve performance and stability

An electron beam evaporated TiO2 layer for high efficiency planar perovskite solar cells on flexible polyethylene terephthalate substrates

Hysteresis-free low-temperature-processed planar perovskite solar cells with 19.1% efficiency

Stable high-performance perovskite solar cells based on inorganic electron transporting bi-layers

Planar Perovskite Solar Cells Using Perovskite CsPbI₃ Quantum Dots as Efficient Hole Transporting Layers.

Double-layered ZnO nanostructures for efficient perovskite solar cells

Efficient planar n-i-p type heterojunction flexible perovskite solar cells with sputtered TiO₂ electron transporting layers

Similar Documents

Hematite electron-transporting layers for environmentally stable planar perovskite solar cells with enhanced energy conversion and lower hysteresis

Yttrium-substituted nanocrystalline TiO2 photoanodes for perovskite based heterojunction solar cells

In situ processed gold nanoparticle-embedded TiO2 nanofibers enabling plasmonic perovskite solar cells to exceed 14% conversion efficiency

Perovskite photovoltaics featuring solution-processable TiO2 as an interfacial electron-transporting layer display to improve performance and stability

An electron beam evaporated TiO2 layer for high efficiency planar perovskite solar cells on flexible polyethylene terephthalate substrates

Hysteresis-free low-temperature-processed planar perovskite solar cells with 19.1% efficiency

Stable high-performance perovskite solar cells based on inorganic electron transporting bi-layers

Planar Perovskite Solar Cells Using Perovskite CsPbI3 Quantum Dots as Efficient Hole Transporting Layers.

Double-layered ZnO nanostructures for efficient perovskite solar cells

Efficient planar n-i-p type heterojunction flexible perovskite solar cells with sputtered TiO2 electron transporting layers

Yttrium-substituted nanocrystalline TiO₂ photoanodes for perovskite based heterojunction solar cells

In situ processed gold nanoparticle-embedded TiO₂ nanofibers enabling plasmonic perovskite solar cells to exceed 14% conversion efficiency

Perovskite photovoltaics featuring solution-processable TiO₂ as an interfacial electron-transporting layer display to improve performance and stability

Planar Perovskite Solar Cells Using Perovskite CsPbI₃ Quantum Dots as Efficient Hole Transporting Layers.

Efficient planar n-i-p type heterojunction flexible perovskite solar cells with sputtered TiO₂ electron transporting layers