Sökning: id:"swepub:oai:DiVA.org:kth-313611" >
Methylammonium Brom...
Methylammonium Bromide Assisted Crystallization for Enhanced Lead-Free Double Perovskite Photovoltaic Performance
-
- Wu, H. (författare)
- Uppsala universitet,Institutionen för kemi - Ångström
-
- Wang, Y. (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.,KTH Royal Inst Technol, Dept Appl Phys Chem, S-11428 Stockholm, Sweden.
-
- Liu, Aijie (författare)
- Uppsala universitet,Fysikalisk kemi
-
visa fler...
-
- Wang, J. (författare)
- Univ Oxford, Dept Chem, Chem Res Lab, 12 Mansfield Rd, Oxford OX1 3TA, England.
-
- Kim, B. J. (författare)
- Uppsala universitet,Institutionen för kemi - Ångström
-
- Liu, Yawen (författare)
- Uppsala universitet,Fysikalisk kemi
-
- Fang, Yuan (författare)
- KTH,Tillämpad fysikalisk kemi
-
- Zhang, X. (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
-
- Boschloo, Gerrit (författare)
- Uppsala universitet,Fysikalisk kemi
-
- Johansson, Erik (författare)
- Uppsala universitet,Fysikalisk kemi
-
visa färre...
-
(creator_code:org_t)
- 2021-12-18
- 2022
- Engelska.
-
Ingår i: Advanced Functional Materials. - : Wiley. - 1616-301X .- 1616-3028. ; 32:14, s. 2109402-
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://onlinelibrar...
-
https://uu.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Cs2AgBiBr6, has recently gained wide attention as a possible alternative to lead-halide perovskites, considering the nontoxicity and improved stability. However, this double perovskite suffers from defects, especially deep electron traps, severely hampering the photovoltaic performance. This work reports a simple method to control the double perovskite crystallization by adding volatile salts into the precursor solution. X-ray diffraction patterns reveal that the organic cation with suitable radius (such as methylammonium, MA+) is introduced into the perovskite lattice, forming an organic/inorganic mixed double perovskite intermediate phase. The organic salt is thereafter fully evaporated during high temperature annealing, and the all-inorganic double perovskite is obtained with dense surface and less pin-holes. From optical and electrical characterization, it is concluded that the Cs2AgBiBr6 film exhibits high quality, with higher light absorptance and emission. Reduced trap density and longer carrier lifetime are also observed. The improved Cs2AgBiBr6 film is beneficial for efficient carrier collection with suppressed defect-assisted recombination. With this strategy, a power conversion efficiency (PCE) of 2.53% is achieved for the champion Cs2AgBiBr6-based solar cell device, which is significantly higher compared to the control device with 1.43% PCE. This work is therefore helpful for further improvement of inorganic lead-free perovskite materials for optoelectronic applications.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Cs 2AgBiBr 6
- lead-free double perovskites
- power conversion efficiency
- solar cells
- trap site density
- Bismuth compounds
- Carrier lifetime
- Cesium compounds
- Conversion efficiency
- Efficiency
- Functional materials
- Lead compounds
- Perovskite
- Perovskite solar cells
- Silver compounds
- Solar power generation
- Double perovskites
- Inorganics
- Lead-Free
- Lead-free double perovskite
- Photovoltaic performance
- Power conversion efficiencies
- Site density
- Trap sites
- Bromine compounds
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Wu, H.
-
Wang, Y.
-
Liu, Aijie
-
Wang, J.
-
Kim, B. J.
-
Liu, Yawen
-
visa fler...
-
Fang, Yuan
-
Zhang, X.
-
Boschloo, Gerrit
-
Johansson, Erik
-
visa färre...
- Om ämnet
-
- TEKNIK OCH TEKNOLOGIER
-
TEKNIK OCH TEKNO ...
-
och Maskinteknik
-
och Energiteknik
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Kemi
-
och Fysikalisk kemi
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Kemi
-
och Materialkemi
- Artiklar i publikationen
-
Advanced Functio ...
- Av lärosätet
-
Kungliga Tekniska Högskolan
-
Uppsala universitet