Results 81 to 90 of about 224,372 (312)

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Complementary Assets and Investment Decisions

open access: yesEmerging Markets Finance and Trade, 2011
This paper analyzes which simultaneous crossover effects among tangible, intangible, and current assets affect investment and disinvestment decisions on tangible and intangible assets. Controlling for nonconvexity and irreversibility effects, we analyze investment and disinvestment over 1,044 firm-year observations of Spanish firms.
Pastor-Agustín, G.   +2 more
openaire   +2 more sources

An Investment Criterion Incorporating Real Options [PDF]

open access: yes
Investment in infrastructure such as the information and communication technology sector requires large, substantial amounts, most of which are sunk or irreversible.
Paul RAPPOPORT   +2 more
core  

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios   +12 more
wiley   +1 more source

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal   +9 more
wiley   +1 more source

Risk Analysis in Investment Appraisal [PDF]

open access: yes
The methodology and uses of Monte-Carlo simulation technique are presented as applied to the analysis and assessment of risk in the evaluation of investment projects.
Savvides, Savvakis C.
core   +1 more source

Factors influencing hotel investment decision making

open access: yes, 2006
Given the stature of international tourism, hotel properties are an important property investment sector. The purpose of this paper is to assess the importance of a range of financial, location, economic, diversification and relationship factors in ...
Newell, Graeme, Seabrook, Ross W.
core  

Decision support approaches for cyber security investment

open access: yes, 2019
When investing in cyber security resources, information security managers have to follow effective decisionmaking strategies. We refer to this as the cyber security investment challenge.In this paper, we consider three possible decision support ...
Fielder, A   +4 more
core   +1 more source

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

open access: yesAdvanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal   +7 more
wiley   +1 more source

DEVELOPMENT OF THE AGRICULTURAL SECTOR FROM MOLDOVA THROUGH AGRICULTURE LOANS [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2013
Financial institutions present on the market become more attentive when they have to give loans to the agriculture sector. The lack of necessary guarantees the low profit registered in agricultural district, economy instability and other things had and ...
Aliona SARGO
doaj  

Home - About - Disclaimer - Privacy